W V. (d) W. (3) Which one is used to determine the internal resistance of a cell
|
|
- Daisy Sanders
- 5 years ago
- Views:
Transcription
1 [CHAPT-13 CUNT LCTICITY] MULTIPL CHOIC QUSTIONS (1) In carbn resistr the gld band indicates tlerance f (a) 5% (b) % 0% (d) 10% () The wrk dne t mve a psitive charge frm ne pint t anther pint given by (a) W Q V (b) V W Q Q W V 1 (d) W VQ (3) Which ne is used t determine the internal resistance f a cell (a) ammeter (b) vltmeter galvanmeter (d) ptentimeter (4) Slide wire bridge is practical frm f (a) ammeter (b) Wheatstne bridge galvanmeter (d) ptentimeter (5) The current flwing twards a pint is taken as (a) psitive (b) negative zer (d) neutral (6) Fr an pen circuit (a) = Vt (b) > Vt < Vt (d) = Vt + Ir (7) 1 J/C = (a) vlt (b) farad ampere (d) hm (8) A thermistr is heat sensitive (a) resistr (b) capacitr inductr (d) dide (9) The temperature cefficient f resistance f a material is expressed as t t (a) (b) t t t t (d) t t (10) If the resistances 1, and 3 are cnnected in series then their equivalent resistance is given by (a) eq 1 3 (b) 1 3 eq (d) eq 1 3 eq (11) Which instrument measure the ptential difference crrectly (a) CO (b) ptentimeter vltmeter (d) bth a and b (1) Tw resistrs each f value 10 hm are cnnected in series, the equivalent resistance will be (a) 10 Ω (b) 0 Ω 5 Ω (d) zer Ω (13) The resistance f silicn decreases with (a) increase in temperature (b) decrease in temperature increase in viscsity (d) decreases in velcity (14) Whenever current is drawn frm a cell, its terminal ptential difference and e.m.f. becme. (a) Different (b) Same Zer (d) Negative (15) A rhestat can perate as a: (a) Transfrmer (b) Amplifier Oscillatr (d) Ptential divider (16) The value f temperature cefficient f resistance f mst thermistrs is: (a) Psitive (b) Negative BY: Prf. Muhammad Amin 1
2 [CHAPT-13 CUNT LCTICITY] Zer (d) Infinity (17) If the cnductivity f a material is small then it is: (a) A cnductr (b) A pr cnductr A gd cnductr (d) An insulatr (18) The pwer utput f a lamp is 6 W. Hw much energy des the lamp give ut in minutes? (a) 3 J (b) 1 J 10 J (d) 70 J (19) lectrical energy is measured in (a) Watt (b) Hrse pwer Kilwatt (d) Kilwatt hur (0) Maximum pwer delivered by battery is (a) P max = 4r Pmax = VI (1) Pwer dissipatin is expressed by (a) V P = (b) Pmax = 4r (d) unlimited (b) P = V P = V (d) P = I () The algebraic sum f ptential changes fr a clsed circuit is: (a) Psitive (b) Negative Zer (d) greater than unity (3) Free electrns are: (a) tightly bund (b) fixed lsely bund (d) tightly fixed (4) Which ne is used t determine the internal resistance f a cell? (a) ammeter (b) vltmeter galvanmeter (d) ptentimeter (5) Siemen is the unit f (a) resistance (b) cnductance resistivity (d) cnductivity (6) The resistivity f a cnductr increases with (a) increase in its length (b) increase in its area increase in its temperature (d) decrease in its length (7) Current flws in the gases due t (a) electrns nly (b) electrns and ins psitive and negative ins (d) electrns and hles (8) The emf is always even when n current is drawn thrugh the battery f cell. (a) Zer (b) Present Absent (d) Maximum (9) The graphical representatin f Ohm s law is (a) Hyperbla (b) llipse Parabla (d) Straight line (30) A student has five resistances each f value 1. The minimum resistance that can be btained by 5 cmbining them in parallel is (a) 1 50 (b) (d) 5 (31) The substance having negative temperature c-efficient is: (a) Carbn (b) Irn Tungsten (d)gld (3) esistivity at a given temperature depends upn : (a) Area f crss-sectin (b) Length Nature f material f cnductr (d) Bth length and area (33) Temperature c-efficient f esistivity permeability is (a) k (b) m 1 k (d) k (34) The drift velcity f an electrn in a cnductr in the presence f electric field is f the rder f 1 (a) 10 ms 3 1 (b) 10 ms ms 7 1 (d) 10 ms (35) Specific resistance f a material depends upn: (a) Length (b) Area BY: Prf. Muhammad Amin
3 [CHAPT-13 CUNT LCTICITY] Temperature (d) Bth A & B (36) If the resistance f 500 have frth band f silver clur then its upper maximum resistance will be: (a) 600 (b) (d) 400 (37) One Ohm is equal t: (a) VC -1 (b) CV -1 AC -1 (d) VA -1 (38) The temperature c-efficient f resistance fr Ge is (a) Psitive (b) Negative All f these (d) Nne f these (39) esistivity is reciprcal f (a) Cnductance (b) Cnductivity Inductin (d) Nne f these (40) Kirchff s first rule is manifestatin f law f cnservatin f (a) Mass (b) nergy Mmentum (d) Charge (41) Maximum pwer delivered by battery is (a) P max P max = 4r = VIt BY: Prf. Muhammad Amin 3 (b) P max = 4r (d) Unlimited (4) The drift velcity f electrns in a cnductr is f the rder f (a) 10-3 ms -1 (b) 10 - ms ms -1 (d) 10-4 ms -1 (43) The heat prduced by the passage f current thrugh a resistr (a) H = I t 1 H= t (b) H = I t I H= t (44) A wire f unifrm area f crss sectin A and length L is cut int tw equal parts. The resistance f each part becmes (a) Duble (b) Half 4 time (d) ¼ time (45) A 100 watt bulb is perated by 00 vlt, the current flwing thrugh the bulb is (a) 0.5 A (b) 1 A A (d).5a (46) One culmb f charge is created by (a) 10 lectrns (b) electrns electrns (d) electrns (47) The electrical analg f mass in electricity is (a) Capacitance (b) Inductance Charge (d) esistance (48) If the cnductivity f a material is high, then it is (a) An insulatr (b) A semi cnductr A gd cnductr (d) A super cnductr (49) Fr an pen circuit, the current flwing thrugh circuit will be: (a) Infinite (b) Finite Maximum (d) Zer (50) The clur f strips n a carbn resistr frm extreme left are yellw, black and brwn respectively its resistance is (a) 4K (b) (d) 40 K (51) The terminal ptential difference f a battery f internal resistance r and emf is (a) V= + Ir (b) V = Ir ε r I V (d) I ε r (5) If the current thrugh a resistance is halved, then the (a) Pwer is halved (b) Heat dissipated is halved Ptential difference is halved (d) esistance is dubled
4 [CHAPT-13 CUNT LCTICITY] (53) lectrmtive frce is mst clsely related t: (a) lectric field Ptential energy (54) Charge carriers in electrlytes are: (a) Prtns Hles (55) Ampere secnd stands fr the unit f: (a) charge energy (56) The unit f electrmtive frce is: (a) Newtn (b) Ptential difference (d) Magnetic field (b) lectrns (d) Psitive and Negative ins (b) emf (d) pwer (b) Pascal Vlt (d) Ampere (57) The SI unit f temperature cefficient f resistivity is. (a) Ohm m (b) K 1 K (d) Ohm (58) The terminal ptential difference f a shrt-circuit battery f emf is equal t (a) (b) (59) Substances like germanium, Silicn have: (a) Psitive temperature cefficient Bth a and b (d) 0 (b) Negative temperature cefficient (d) Nne f these (60) Three resistances 5000, 500 and 50 Ohms are cnnected in series acrss 550 V mains. The current flwing thrugh them will be: (a) 1 A (b) 100 ma 10 ma (d) 1 ma BY: Prf. Muhammad Amin 4
5 [CHAPT-13 CUNT LCTICITY] SHOT QUSTIONS 13.1 A ptential difference is applied acrss the ends f a cpper wire. What is the effect n the drift velcity f free electrns by. (i) Increasing the ptential difference. (ii) Decreasing the length and the temperature f the wire Ans: (i) As V = d r V if d = cnstant. Abve relatin shws that by increasing the ptential difference V, will als increases. As, F q µ r F e s, F As increases, frce F n the free electrns will als increase Hence, the drift velcity will increase. V 1 (ii) As V = d r d= d µ (if V is cnstant) If the length d f the wire is decreased, lectric field intensity increases. S the drift velcity will increase. Decreasing temperature decreases the amplitude f vibratin f the atms. Then the chance f cllisin f free electrns with atms decreases. Hence the drift velcity increases 13. D bends in a wire affect its electrical resistance? xplain. Ans: As L A lectrical resistance f a wire depends upn its (i) nature (ii) length (iii) area f crss sectin Any bend in a wire d nt have any affect n the length, area f crss sectin r nature f wire. S the resistance will nt be affected What are the resistances f the resistrs given in the figures A and B? What is the tlerance f each? xplain what is meant by the tlerance? Ans:- First band = Brwn = 1 ND band = Green = 5 3 D band = ed = 00 4 TH band = Gld = 5 % S, = % ST 1 Band = Yellw = 4 ND Band = White = 9 D 3 Band = Orange = 00 TH 4 Band = Silver = 10% S, = W± 10% Tlerance: Tlerance means the pssible variatin f a resistance frm the marked value. Fr example, a 1000resistance with a tlerance f ± 10% will have an actual resistance anywhere between 900 and 1100 BY: Prf. Muhammad Amin 5
6 [CHAPT-13 CUNT LCTICITY] Why des the resistance f a cnductr rise with temperature? Ans: As the temperature f the cnductr rises, amplitude f the vibratin f atms f the lattice increases. As a result, cllisin f free electrn with themselves & with the vibrating atms increases and s resistance f the cnductr increases What are the difficulties in testing whether the filament f a lighted bulb beys Ohm s law? Ans: When current is passed thrugh the filament f a bulb, its temperature increases, s resistance increases. Hence filament f a bulb des nt bey hm s law, hm s law is nly beyed if the resistance is kept cnstant Is the filament resistance lwer r higher in a 500W, 0V light bulb than in a 100W, 0V bulb? Ans: Accrding t given data P1 = 500W V1 = 0V P = 100 V = 0 V We knw that V P= V = P (0) in first bulb 500 = =96.8Ω (500) (0) in secnd bulb 100 = =484Ω (100) Therefre resistance f 500W bulb is less than that f 100W bulb xplain why the terminal ptential difference f a battery decreases when the current drawn frm it is increased? Ans: We knw that terminal ptential is given as: Vt = Ir When current drawn I increases then factr Ir increases. Hence terminal P.D decreases What is Wheatstne bridge? Hw can it be used t determine an unknwn resistance? Ans: Wheatstne Bridge cnsist f fur resistances 1,,3 and4 cnnected in such a way t frm a mesh ABCDA. When the bridge is balanced electrically, n current flws thrugh the galvanmeter. 1 3 In this situatin. If ne f the resistance 4 = X is 4 unknwn resistance and the ther resistances 1,, and 3, are knwn, then 1 3 r X 3 S X can be fund. X Describe a circuit which will give a cntinuusly varying ptential. Ans: Ptential divider circuit can prvide cntinuusly varying ptential. The circuit is shwn in Fig. vltage V is applied acrss A and B f the rhestat with the help f a battery. The current passing thrugh is given by V I=. The ptential difference between the pints BC is V current resis tan ce BC V I r BC V r VBC r V r VBC V BY: Prf. Muhammad Amin 6
7 [CHAPT-13 CUNT LCTICITY] This circuit can prvide a varying ptential difference frm 0 t V. As the sliding cntact C is mved twards the end B, The length and hence the resistr r f the prtin f wire decrease. As r V BC = V Hence, VBC decreases If C is mved twards the end A, r increases hence utput vltage increase ADDITIONAL SHOT QUSTIONS (1) Differentiate between MF and P.D? MF POTNTIAL DIFFNC It is a ptential difference acrss the surce when n current flws It is a ptential difference acrss the surce when sme current flws. emf is the cause. Ptential Difference is a effect f emf. It can never be zer. It may be zer It is given by the relatin. = V + Ir It is given by the relatin. V = Ir Vltmeter cnnected with surce measures emf with pen circuit. Vltmeter cnnected with surce measures Ptential Difference with clsed circuit. () Hw current flws thrugh a metallic cnductr. Ans: In the absence f electric field, the free electrns in cnductr are in randm mtin, which depends upn temperature. when electric field is set up in a cnductr by a surce which establishes cnstant ptential difference acrss the cnductr, the free electrns mdify their randm mtin in such a way that they drift slwly ppsite t field. Thus a net directed mtin f charges takes place alng the wire and a current begins t flw thrugh it. (3) What is series and parallel cmbinatins f resistrs. Ans: SIS COMBINATION esistances cnnected end t end are called series cmbinatin f resistance. i.e. PAALLL COMBINATION esistances cnnected side by side are called parallel cmbinatin f resistance. i.e. There is single path f current. There are mre than ne path f current. Current thrugh each resistance is same i.e. I 1 I I 3 I Sum f currents thrugh all resistances is equal t the net current f the circuit. I.e. I I I I Sum f ptential difference acrss each is equal t the ptential difference f the battery i.e. V V V V 1 3 quivalent resistance f series cmbinatin is... eq 1 3 quivalent resistance is greater than the maximum f all resistances cmbined in series i.e. eq 1, eq... eq max. 1 3 BY: Prf. Muhammad Amin 7 Ptential difference acrss each resistance is same as that f battery i.e. V V V V 1 3 quivalent resistance f parallel cmbinatin is eq 1 3 quivalent resistance is less than the minimum f all resistance is less than the minimum f all resistances cmbined in parallel i.e.,... eq 1 eq eq max.
8 [CHAPT-13 CUNT LCTICITY] (4) What is difference between hmic and nn-hmic substances? Ans: OHMIC SUBSTANCS NON OHMIC SUBSTANCS Ohmic substances bey the Ohm s law. Nn hmic substances d nt bey hm s law. Graph between V and I fr hmic substances is straight line r linear. Graph between V and I fr nn hmic substances is nt straight line i.e. it is a curve. Slpe f graph remains same at all Slpe f the graph is nt same at all pints. xamples f hmic substances are pure metals. Graphs f hmic substances fr V vs I are as: pints. xamples f nn hmic substances are tungsten filament and semi cnductr dide. Graphs f nne hmic substances fr V vs I are as: (5) What is the temperature c-efficient f resistivity? Ans: The fractinal change in resistivity per Kelvin is knwn as temperature c-efficient f resistivity. Mathematically it can be written as ρ -ρ t α= ρt ρ Where is the resistivity f the material at 0 C and is the resistivity at t C, and t is the given change temperature. Unit:- The SI unit f temperature c-efficient f resistivity is K -1 (6) What is the difference between cnventinal current and electrnic current. Ans: Cnventinal current:- It is defined as that current which passes frm a pint at higher ptential t a pint at a lwer ptential as if it represents the mvement f psitive charges. lectrnic current:- The current due t mtin f negative charges (r electrns) that flws frm the negative terminal f the battery t the psitive terminal in the electrical circuit is called electrnic current. (7) State Kirchhff s 1 st and nd rule. Ans: Kirchhff s First ule It states that algebraic sum f currents meeting at a pint is zer. This is called Kirchhff s current law. Kirchhff s 1 st rule is als knwn as Kirchhff s pint rule. I = 0 Kirchhff s Secnd ule It is stated as: Algebraic Sum f vltage changes acrss a clsed circuit r lp must be equal t zer. Accrding t law f cnservatin f energy, the ttal change in energy f ur system is zer. Thus +1 Q - I1 Q - Q - I Q = 0 Or 1 I1 I = 0 (8) Name tw different effects f current. Ans: ffects f Current: Heating effect When current passes thrugh a cnductr due t resistance sme f electrical energy is cnverted int heat. BY: Prf. Muhammad Amin 8 ρ t
9 [CHAPT-13 CUNT LCTICITY] i.e H = I t where I = current, = resistance and t = time Magnetic effect It is intrinsic prperty that when a current passes thrugh a cnductr a magnetic field is prduced arund it. Chemical effect Certain liquids such as dilute sulphuric acid r cpper sulphate slutin cnducts ekctric current due t sme chemical reactins, this prcess is called electrlysis. (9) Hw can yu cmpare emf f tw cells with the help f a ptentimeter? Ans: Suppse 1 & are emf s f tw cells t be cmpared. Fr this purpse ptentimeter is balanced by cnnecting 1 & separately. Let l1 is the balancing length fr 1 & is the balancing length fr. These tw emf s will be cmpared by the fllwing frmula: l l 1 1 That is emf is prprtinal t balancing length in ptentimeter. (10) What is resistivity and hw it depend upn temperature. Ans: esistivity: It is defined as The resistance f a meter cube f a material. A L It unit is Dependence n Temperature: Within certain limits: (i) esistivity increases with increase f temperature f cnductr (ii) esistivity decreases with increase f temperature f semicnductr. (iii) esistivity remains cnstant with change f temperature f insulatr. (11) Write dwn the value f equivalent resistance fr three resistrs 1, and 3 when jined in (a) series, and (b) parallel. Ans: (a) Series: In case f series jining, the equivalent resistance will be e 1 3 (b) Parallel: In case f parallel jining, the equivalent resistance is fund as fllws: e e e m BY: Prf. Muhammad Amin 9
Edexcel GCSE Physics
Edexcel GCSE Physics Tpic 10: Electricity and circuits Ntes (Cntent in bld is fr Higher Tier nly) www.pmt.educatin The Structure f the Atm Psitively charged nucleus surrunded by negatively charged electrns
More informationElectric Current and Resistance
Electric Current and Resistance Electric Current Electric current is the rate f flw f charge thrugh sme regin f space The SI unit f current is the ampere (A) 1 A = 1 C / s The symbl fr electric current
More informationPhys102 Final-061 Zero Version Coordinator: Nasser Wednesday, January 24, 2007 Page: 1
Crdinatr: Nasser Wednesday, January 4, 007 Page: 1 Q1. Tw transmitters, S 1 and S shwn in the figure, emit identical sund waves f wavelength λ. The transmitters are separated by a distance λ /. Cnsider
More informationHonors Physics Final Review Summary
Hnrs Physics Final Review Summary Wrk Dne By A Cnstant Frce: Wrk describes a frce s tendency t change the speed f an bject. Wrk is dne nly when an bject mves in respnse t a frce, and a cmpnent f the frce
More informationQ1. In figure 1, Q = 60 µc, q = 20 µc, a = 3.0 m, and b = 4.0 m. Calculate the total electric force on q due to the other 2 charges.
Phys10 Secnd Majr-08 Zer Versin Crdinatr: Dr. I. M. Nasser Saturday, May 3, 009 Page: 1 Q1. In figure 1, Q = 60 µc, q = 0 µc, a = 3.0 m, and b = 4.0 m. Calculate the ttal electric frce n q due t the ther
More informationQ1. A string of length L is fixed at both ends. Which one of the following is NOT a possible wavelength for standing waves on this string?
Term: 111 Thursday, January 05, 2012 Page: 1 Q1. A string f length L is fixed at bth ends. Which ne f the fllwing is NOT a pssible wavelength fr standing waves n this string? Q2. λ n = 2L n = A) 4L B)
More informationChapter 30. Inductance
Chapter 30 nductance 30. Self-nductance Cnsider a lp f wire at rest. f we establish a current arund the lp, it will prduce a magnetic field. Sme f the magnetic field lines pass thrugh the lp. et! be the
More informationNGSS High School Physics Domain Model
NGSS High Schl Physics Dmain Mdel Mtin and Stability: Frces and Interactins HS-PS2-1: Students will be able t analyze data t supprt the claim that Newtn s secnd law f mtin describes the mathematical relatinship
More informationPhysics 102. Second Midterm Examination. Summer Term ( ) (Fundamental constants) (Coulomb constant)
ε µ0 N mp T kg Kuwait University hysics Department hysics 0 Secnd Midterm Examinatin Summer Term (00-0) July 7, 0 Time: 6:00 7:0 M Name Student N Instructrs: Drs. bdel-karim, frusheh, Farhan, Kkaj, a,
More informationQ1. A) 48 m/s B) 17 m/s C) 22 m/s D) 66 m/s E) 53 m/s. Ans: = 84.0 Q2.
Phys10 Final-133 Zer Versin Crdinatr: A.A.Naqvi Wednesday, August 13, 014 Page: 1 Q1. A string, f length 0.75 m and fixed at bth ends, is vibrating in its fundamental mde. The maximum transverse speed
More informationBASIC DIRECT-CURRENT MEASUREMENTS
Brwn University Physics 0040 Intrductin BASIC DIRECT-CURRENT MEASUREMENTS The measurements described here illustrate the peratin f resistrs and capacitrs in electric circuits, and the use f sme standard
More informationInformation for Physics 1201 Midterm I Wednesday, February 20
My lecture slides are psted at http://www.physics.hi-state.edu/~humanic/ Infrmatin fr Physics 1201 Midterm I Wednesday, February 20 1) Frmat: 10 multiple chice questins (each wrth 5 pints) and tw shw-wrk
More informationThree charges, all with a charge of 10 C are situated as shown (each grid line is separated by 1 meter).
Three charges, all with a charge f 0 are situated as shwn (each grid line is separated by meter). ) What is the net wrk needed t assemble this charge distributin? a) +0.5 J b) +0.8 J c) 0 J d) -0.8 J e)
More information1. Transformer A transformer is used to obtain the approximate output voltage of the power supply. The output of the transformer is still AC.
PHYSIS 536 Experiment 4: D Pwer Supply I. Intrductin The prcess f changing A t D is investigated in this experiment. An integrated circuit regulatr makes it easy t cnstruct a high-perfrmance vltage surce
More informationCBSE Board Class XII Physics Set 1 Board Paper 2008 (Solution)
CBSE Bard Class XII Physics Set 1 Bard Paper 2008 (Slutin) 1. The frce is given by F qv B This frce is at right angles t &. 2. Micrwaves. It is used in radar & cmmunicatin purpses. 3. Or As m e e m S,
More informationPlan o o. I(t) Divide problem into sub-problems Modify schematic and coordinate system (if needed) Write general equations
STAPLE Physics 201 Name Final Exam May 14, 2013 This is a clsed bk examinatin but during the exam yu may refer t a 5 x7 nte card with wrds f wisdm yu have written n it. There is extra scratch paper available.
More informationPhysics 2B Chapter 23 Notes - Faraday s Law & Inductors Spring 2018
Michael Faraday lived in the Lndn area frm 1791 t 1867. He was 29 years ld when Hand Oersted, in 1820, accidentally discvered that electric current creates magnetic field. Thrugh empirical bservatin and
More informationPHY 2054C Review guide Fall 2018 Chapter 17 Wave optics
PHY 2054C Review guide Fall 2018 Chapter 17 Wave ptics Light acts as a wave, ray, particle, and phtn. Refractive index n = c/v Light waves travel with speed c in a vacuum they slw dwn when they pass thrugh
More informationAQA GCSE Physics. Topic 7: Magnetism and Electromagnetism. Notes. (Content in bold is for Higher Tier only)
AQA GCSE Physics Tpic 7: Magnetism and Electrmagnetism Ntes (Cntent in bld is fr Higher Tier nly) Magnets - Nrth and Suth Ples - Same Ples repel - Oppsite ples attract Permanent Magnets - Always magnetic,
More informationModule 4: General Formulation of Electric Circuit Theory
Mdule 4: General Frmulatin f Electric Circuit Thery 4. General Frmulatin f Electric Circuit Thery All electrmagnetic phenmena are described at a fundamental level by Maxwell's equatins and the assciated
More informationChapter VII Electrodynamics
Chapter VII Electrdynamics Recmmended prblems: 7.1, 7., 7.4, 7.5, 7.7, 7.8, 7.10, 7.11, 7.1, 7.13, 7.15, 7.17, 7.18, 7.0, 7.1, 7., 7.5, 7.6, 7.7, 7.9, 7.31, 7.38, 7.40, 7.45, 7.50.. Ohm s Law T make a
More informationPHYS College Physics II Final Examination Review
PHYS 1402- Cllege Physics II Final Examinatin Review The final examinatin will be based n the fllwing Chapters/Sectins and will cnsist f tw parts. Part 1, cnsisting f Multiple Chice questins, will accunt
More information4) What is the magnitude of the net electric field at the center of the square?
Fur charges are n the fur crners f a square. Q = +5C, Q = -0C, Q 3 = +5C, Q 4 = -0C. The side length f each side f the square is 3 m. Q Q ) What is the directin f the frce n Q due t ONLY Q 4? (a) up (b)
More informationChapter 16. Capacitance. Capacitance, cont. Parallel-Plate Capacitor, Example 1/20/2011. Electric Energy and Capacitance
summary C = ε A / d = πε L / ln( b / a ) ab C = 4πε 4πε a b a b >> a Chapter 16 Electric Energy and Capacitance Capacitance Q=CV Parallel plates, caxial cables, Earth Series and parallel 1 1 1 = + +..
More informationName Student ID. A student uses a voltmeter to measure the electric potential difference across the three boxes.
Name Student ID II. [25 pt] Thi quetin cnit f tw unrelated part. Part 1. In the circuit belw, bulb 1-5 are identical, and the batterie are identical and ideal. Bxe,, and cntain unknwn arrangement f linear
More informationChapter 19. Electric Potential Energy and the Electric Potential
Chapter 19 Electric Ptential Energy and the Electric Ptential 19.1 Ptential Energy W mgh mgh GPE GPE 19.1 Ptential Energy 19.1 Ptential Energy W EPE EPE 19. The Electric Ptential Difference W q EPE q EPE
More informationPhys102 Second Major-102 Zero Version Coordinator: Al-Shukri Thursday, May 05, 2011 Page: 1
Crdinatr: Al-Shukri Thursday, May 05, 2011 Page: 1 1. Particles A and B are electrically neutral and are separated by 5.0 μm. If 5.0 x 10 6 electrns are transferred frm particle A t particle B, the magnitude
More informationLab 11 LRC Circuits, Damped Forced Harmonic Motion
Physics 6 ab ab 11 ircuits, Damped Frced Harmnic Mtin What Yu Need T Knw: The Physics OK this is basically a recap f what yu ve dne s far with circuits and circuits. Nw we get t put everything tgether
More information11. DUAL NATURE OF RADIATION AND MATTER
11. DUAL NATURE OF RADIATION AND MATTER Very shrt answer and shrt answer questins 1. Define wrk functin f a metal? The minimum energy required fr an electrn t escape frm the metal surface is called the
More informationBicycle Generator Dump Load Control Circuit: An Op Amp Comparator with Hysteresis
Bicycle Generatr Dump Lad Cntrl Circuit: An Op Amp Cmparatr with Hysteresis Sustainable Technlgy Educatin Prject University f Waterl http://www.step.uwaterl.ca December 1, 2009 1 Summary This dcument describes
More informationGAUSS' LAW E. A. surface
Prf. Dr. I. M. A. Nasser GAUSS' LAW 08.11.017 GAUSS' LAW Intrductin: The electric field f a given charge distributin can in principle be calculated using Culmb's law. The examples discussed in electric
More informationRevision: August 19, E Main Suite D Pullman, WA (509) Voice and Fax
.7.4: Direct frequency dmain circuit analysis Revisin: August 9, 00 5 E Main Suite D Pullman, WA 9963 (509) 334 6306 ice and Fax Overview n chapter.7., we determined the steadystate respnse f electrical
More informationApplying Kirchoff s law on the primary circuit. V = - e1 V+ e1 = 0 V.D. e.m.f. From the secondary circuit e2 = v2. K e. Equivalent circuit :
TRANSFORMERS Definitin : Transfrmers can be defined as a static electric machine which cnverts electric energy frm ne ptential t anther at the same frequency. It can als be defined as cnsists f tw electric
More informationStudy Guide Physics Pre-Comp 2013
I. Scientific Measurement Metric Units S.I. English Length Meter (m) Feet (ft.) Mass Kilgram (kg) Pund (lb.) Weight Newtn (N) Ounce (z.) r pund (lb.) Time Secnds (s) Secnds (s) Vlume Liter (L) Galln (gal)
More informationnll c~ DLe E~ V I. TOPIC 17 Current Electricity o V 0 V N77/1I/ ' I -, o voltage 'J.
TOPI 17 urrent lectricity Which statement describes the electric ptential difference I I I between tw pints in a wire that carries a current? the frce required t mve a unit psitive charge between the pints
More informationSupplementary Course Notes Adding and Subtracting AC Voltages and Currents
Supplementary Curse Ntes Adding and Subtracting AC Vltages and Currents As mentined previusly, when cmbining DC vltages r currents, we nly need t knw the plarity (vltage) and directin (current). In the
More informationChem 163 Section: Team Number: ALE 24. Voltaic Cells and Standard Cell Potentials. (Reference: 21.2 and 21.3 Silberberg 5 th edition)
Name Chem 163 Sectin: Team Number: ALE 24. Vltaic Cells and Standard Cell Ptentials (Reference: 21.2 and 21.3 Silberberg 5 th editin) What des a vltmeter reading tell us? The Mdel: Standard Reductin and
More informationclicker 1/25/2011 All C s are 8.00 nf. The battery is 12 V. What is the equivalent capacitance? summary o
/5/0 summary C = ε / d = πε / ln( b / a ) ab C = 4πε 4πε a b a b >> a Capacitance Parallel plates, caxial cables, Earth Series and parallel cmbinatins Energy in a capacitr Dielectrics Dielectric strength
More informationTOPPER SAMPLE PAPER 2 Class XII- Physics
TOPPER SAMPLE PAPER 2 Class XII- Physics Time: Three Hurs Maximum Marks: 70 General Instructins (a) All questins are cmpulsry. (b) There are 30 questins in ttal. Questins 1 t 8 carry ne mark each, questins
More informationRelationships Between Frequency, Capacitance, Inductance and Reactance.
P Physics Relatinships between f,, and. Relatinships Between Frequency, apacitance, nductance and Reactance. Purpse: T experimentally verify the relatinships between f, and. The data cllected will lead
More informationPHYSICS Unit 3 Trial Examination
STAV Publishing Pty Ltd 005 PHYSICS Unit 3 Trial Examinatin SOLUTIONS BOOK Published by STAV Publishing Pty Ltd. STAV Huse, 5 Munr Street, Cburg VIC 3058 Australia. Phne: 6 + 3 9385 3999 Fax: 6 + 3 9386
More informationElectrochemistry. Reduction: the gaining of electrons. Reducing agent (reductant): species that donates electrons to reduce another reagent.
Electrchemistry Review: Reductin: the gaining f electrns Oxidatin: the lss f electrns Reducing agent (reductant): species that dnates electrns t reduce anther reagent. Oxidizing agent (xidant): species
More informationECE 2100 Circuit Analysis
ECE 00 Circuit Analysis Lessn 6 Chapter 4 Sec 4., 4.5, 4.7 Series LC Circuit C Lw Pass Filter Daniel M. Litynski, Ph.D. http://hmepages.wmich.edu/~dlitynsk/ ECE 00 Circuit Analysis Lessn 5 Chapter 9 &
More information37 Maxwell s Equations
37 Maxwell s quatins In this chapter, the plan is t summarize much f what we knw abut electricity and magnetism in a manner similar t the way in which James Clerk Maxwell summarized what was knwn abut
More informationCoupled Inductors and Transformers
Cupled nductrs and Transfrmers Self-nductance When current i flws thrugh the cil, a magnetic flux is prduced arund it. d d di di v= = = dt di dt dt nductance: = d di This inductance is cmmnly called self-inductance,
More informationOscillator. Introduction of Oscillator Linear Oscillator. Stability. Wien Bridge Oscillator RC Phase-Shift Oscillator LC Oscillator
Oscillatr Intrductin f Oscillatr Linear Oscillatr Wien Bridge Oscillatr Phase-Shift Oscillatr L Oscillatr Stability Oscillatrs Oscillatin: an effect that repeatedly and regularly fluctuates abut the mean
More informationInterference is when two (or more) sets of waves meet and combine to produce a new pattern.
Interference Interference is when tw (r mre) sets f waves meet and cmbine t prduce a new pattern. This pattern can vary depending n the riginal wave directin, wavelength, amplitude, etc. The tw mst extreme
More informationChapter 2 GAUSS LAW Recommended Problems:
Chapter GAUSS LAW Recmmended Prblems: 1,4,5,6,7,9,11,13,15,18,19,1,7,9,31,35,37,39,41,43,45,47,49,51,55,57,61,6,69. LCTRIC FLUX lectric flux is a measure f the number f electric filed lines penetrating
More informationThermodynamics Partial Outline of Topics
Thermdynamics Partial Outline f Tpics I. The secnd law f thermdynamics addresses the issue f spntaneity and invlves a functin called entrpy (S): If a prcess is spntaneus, then Suniverse > 0 (2 nd Law!)
More informationMultiple choice questions (1) 1 Tesla = (c) NA -1 (d) NA -1 m -2
Multiple chice questins (1) 1 Tesla = (a) N Am -1 (b) NA -1 m -1 NA -1 (d) NA -1 m - () Tw parallel straiht wires carryin currents in ppsite directin (a)repel each ther (b) attract each ther N effect prduce
More informationPotential and Capacitance
Ptential and apacitance Electric Ptential Electric ptential (V) = Electric ptential energy (U e ) per unit charge () Define: ptential energy U e = 0 at infinity (r = ) lim U 0 r e Nte the similarity f
More informationPHYSICS CLASS - XII CBSE BOARD PAPER SOLUTION (SET 2) λ = 4 10 m
() PHYSICS CLSS - XII CBSE BD PPER SOLUTION (SET ). Sl. Diamagnetic materials have a tendency t repel magnetic field lines while paramagnetic materials attract magnetic field lines.. Sl. Let e = emf f
More informationCopyright Paul Tobin 63
DT, Kevin t. lectric Circuit Thery DT87/ Tw-Prt netwrk parameters ummary We have seen previusly that a tw-prt netwrk has a pair f input terminals and a pair f utput terminals figure. These circuits were
More informationLecture 02 CSE 40547/60547 Computing at the Nanoscale
PN Junctin Ntes: Lecture 02 CSE 40547/60547 Cmputing at the Nanscale Letʼs start with a (very) shrt review f semi-cnducting materials: - N-type material: Obtained by adding impurity with 5 valence elements
More informationELECTROSTATIC FIELDS IN MATERIAL MEDIA
MF LCTROSTATIC FILDS IN MATRIAL MDIA 3/4/07 LCTURS Materials media may be classified in terms f their cnductivity σ (S/m) as: Cnductrs The cnductivity usually depends n temperature and frequency A material
More informationThermodynamics and Equilibrium
Thermdynamics and Equilibrium Thermdynamics Thermdynamics is the study f the relatinship between heat and ther frms f energy in a chemical r physical prcess. We intrduced the thermdynamic prperty f enthalpy,
More informationSupplementary Course Notes Adding and Subtracting AC Voltages and Currents
Supplementary Curse Ntes Adding and Subtracting AC Vltages and Currents As mentined previusly, when cmbining DC vltages r currents, we nly need t knw the plarity (vltage) and directin (current). In the
More informationPhysics 212. Lecture 12. Today's Concept: Magnetic Force on moving charges. Physics 212 Lecture 12, Slide 1
Physics 1 Lecture 1 Tday's Cncept: Magnetic Frce n mving charges F qv Physics 1 Lecture 1, Slide 1 Music Wh is the Artist? A) The Meters ) The Neville rthers C) Trmbne Shrty D) Michael Franti E) Radiatrs
More informationCHEM Thermodynamics. Change in Gibbs Free Energy, G. Review. Gibbs Free Energy, G. Review
Review Accrding t the nd law f Thermdynamics, a prcess is spntaneus if S universe = S system + S surrundings > 0 Even thugh S system
More informationTrimester 2 Exam 3 Study Guide Honors Chemistry. Honors Chemistry Exam 3 Review
Trimester 2 Exam 3 Study Guide Hnrs Chemistry BOND POLARITY Hnrs Chemistry Exam 3 Review Identify whether a bnd is plar r nnplar based ff difference in electrnegativity btwn 2 atms (electrnegativity values
More informationChapter 6. Dielectrics and Capacitance
Chapter 6. Dielectrics and Capacitance Hayt; //009; 6- Dielectrics are insulating materials with n free charges. All charges are bund at mlecules by Culmb frce. An applied electric field displaces charges
More informationSynchronous Motor V-Curves
Synchrnus Mtr V-Curves 1 Synchrnus Mtr V-Curves Intrductin Synchrnus mtrs are used in applicatins such as textile mills where cnstant speed peratin is critical. Mst small synchrnus mtrs cntain squirrel
More informationChapter 23 Electromagnetic Waves Lecture 14
Chapter 23 Electrmagnetic Waves Lecture 14 23.1 The Discvery f Electrmagnetic Waves 23.2 Prperties f Electrmagnetic Waves 23.3 Electrmagnetic Waves Carry Energy and Mmentum 23.4 Types f Electrmagnetic
More informationEE247B/ME218: Introduction to MEMS Design Lecture 7m1: Lithography, Etching, & Doping CTN 2/6/18
EE247B/ME218 Intrductin t MEMS Design Lecture 7m1 Lithgraphy, Etching, & Dping Dping f Semicnductrs Semicnductr Dping Semicnductrs are nt intrinsically cnductive T make them cnductive, replace silicn atms
More informationSchedule. Time Varying electromagnetic fields (1 Week) 6.1 Overview 6.2 Faraday s law (6.2.1 only) 6.3 Maxwell s equations
chedule Time Varying electrmagnetic fields (1 Week) 6.1 Overview 6.2 Faraday s law (6.2.1 nly) 6.3 Maxwell s equatins Wave quatin (3 Week) 6.5 Time-Harmnic fields 7.1 Overview 7.2 Plane Waves in Lssless
More informationENGINEERING COUNCIL CERTIFICATE LEVEL THERMODYNAMIC, FLUID AND PROCESS ENGINEERING C106 TUTORIAL 5 THE VISCOUS NATURE OF FLUIDS
ENGINEERING COUNCIL CERTIFICATE LEVEL THERMODYNAMIC, FLUID AND PROCESS ENGINEERING C106 TUTORIAL 5 THE VISCOUS NATURE OF FLUIDS On cmpletin f this tutrial yu shuld be able t d the fllwing. Define viscsity
More informationZVS Boost Converter. (a) (b) Fig 6.29 (a) Quasi-resonant boost converter with M-type switch. (b) Equivalent circuit.
EEL6246 Pwer Electrnics II Chapter 6 Lecture 6 Dr. Sam Abdel-Rahman ZVS Bst Cnverter The quasi-resnant bst cnverter by using the M-type switch as shwn in Fig. 6.29(a) with its simplified circuit shwn in
More informationSolution to HW14 Fall-2002
Slutin t HW14 Fall-2002 CJ5 10.CQ.003. REASONING AND SOLUTION Figures 10.11 and 10.14 shw the velcity and the acceleratin, respectively, the shadw a ball that underges unirm circular mtin. The shadw underges
More informationExaminer: Dr. Mohamed Elsharnoby Time: 180 min. Attempt all the following questions Solve the following five questions, and assume any missing data
Benha University Cllege f Engineering at Banha Department f Mechanical Eng. First Year Mechanical Subject : Fluid Mechanics M111 Date:4/5/016 Questins Fr Final Crrective Examinatin Examiner: Dr. Mhamed
More informationChapter One Atoms and Elements
S u m m e r S c h l 2 0 1 4 S c i e n c e S T P a g e 1 Chapter One Atms and Elements Histry f the Atm Daltn s Atmic Mdel Daltn thught f atms as slid, indivisible balls f different Thmsn s Atmic Mdel Thmsn
More information20 Faraday s Law and Maxwell s Extension to Ampere s Law
Chapter 20 Faraday s Law and Maxwell s Extensin t Ampere s Law 20 Faraday s Law and Maxwell s Extensin t Ampere s Law Cnsider the case f a charged particle that is ming in the icinity f a ming bar magnet
More informationLecture 19: Electronic Contributions to OCV in Batteries and Solar Cells. Notes by MIT Student (and MZB) March 18, 2009
Lecture 19: lectrnic Cntributins t OCV in Batteries and Slar Cells Ntes by MIT Student (and MZB) March 18, 2009 -In many situatins the µ e cnstant fr metal electrdes, this due t the abundance and freedm
More information[COLLEGE ALGEBRA EXAM I REVIEW TOPICS] ( u s e t h i s t o m a k e s u r e y o u a r e r e a d y )
(Abut the final) [COLLEGE ALGEBRA EXAM I REVIEW TOPICS] ( u s e t h i s t m a k e s u r e y u a r e r e a d y ) The department writes the final exam s I dn't really knw what's n it and I can't very well
More informationGeneral Chemistry II, Unit I: Study Guide (part I)
1 General Chemistry II, Unit I: Study Guide (part I) CDS Chapter 14: Physical Prperties f Gases Observatin 1: Pressure- Vlume Measurements n Gases The spring f air is measured as pressure, defined as the
More information2004 AP CHEMISTRY FREE-RESPONSE QUESTIONS
2004 AP CHEMISTRY FREE-RESPONSE QUESTIONS 6. An electrchemical cell is cnstructed with an pen switch, as shwn in the diagram abve. A strip f Sn and a strip f an unknwn metal, X, are used as electrdes.
More informationMODULE 1. e x + c. [You can t separate a demominator, but you can divide a single denominator into each numerator term] a + b a(a + b)+1 = a + b
. REVIEW OF SOME BASIC ALGEBRA MODULE () Slving Equatins Yu shuld be able t slve fr x: a + b = c a d + e x + c and get x = e(ba +) b(c a) d(ba +) c Cmmn mistakes and strategies:. a b + c a b + a c, but
More informationChapter 9: Quantization of Light
Chapter 9: Quantizatin Light 9.1 Planck s Quantum Thery 9.1.1 Distinguish between Planck s quantum thery and classical thery energy The undatin the Planck s quantum thery is a thery black bdy radiatin.
More informationAP Physics Kinematic Wrap Up
AP Physics Kinematic Wrap Up S what d yu need t knw abut this mtin in tw-dimensin stuff t get a gd scre n the ld AP Physics Test? First ff, here are the equatins that yu ll have t wrk with: v v at x x
More informationFigure 1a. A planar mechanism.
ME 5 - Machine Design I Fall Semester 0 Name f Student Lab Sectin Number EXAM. OPEN BOOK AND CLOSED NOTES. Mnday, September rd, 0 Write n ne side nly f the paper prvided fr yur slutins. Where necessary,
More informationINDUCTANCE Self Inductance
DUCTCE 3. Sef nductance Cnsider the circuit shwn in the Figure. S R When the switch is csed the current, and s the magnetic fied, thrugh the circuit increases frm zer t a specific vaue. The increasing
More informationCHAPTER 6 WORK AND ENERGY
CHAPTER 6 WORK AND ENERGY CONCEPTUAL QUESTIONS 16. REASONING AND SOLUTION A trapeze artist, starting rm rest, swings dwnward n the bar, lets g at the bttm the swing, and alls reely t the net. An assistant,
More informationDownloaded from
ELECTROCHEMISTRY ONE Mark Each 1. The difference between the electrde ptentials f tw electrdes when n current is drawn thrugh the cell is called.. Under what cnditin an electrchemical cell can behave like
More informationSections 15.1 to 15.12, 16.1 and 16.2 of the textbook (Robbins-Miller) cover the materials required for this topic.
Tpic : AC Fundamentals, Sinusidal Wavefrm, and Phasrs Sectins 5. t 5., 6. and 6. f the textbk (Rbbins-Miller) cver the materials required fr this tpic.. Wavefrms in electrical systems are current r vltage
More informationHarmonic Motion (HM) Oscillation with Laminar Damping
Harnic Mtin (HM) Oscillatin with Lainar Daping If yu dn t knw the units f a quantity yu prbably dn t understand its physical significance. Siple HM r r Hke' s Law: F k x definitins: f T / T / Bf x A sin
More informationENGI 4430 Parametric Vector Functions Page 2-01
ENGI 4430 Parametric Vectr Functins Page -01. Parametric Vectr Functins (cntinued) Any nn-zer vectr r can be decmpsed int its magnitude r and its directin: r rrˆ, where r r 0 Tangent Vectr: dx dy dz dr
More informationI. Analytical Potential and Field of a Uniform Rod. V E d. The definition of electric potential difference is
Length L>>a,b,c Phys 232 Lab 4 Ch 17 Electric Ptential Difference Materials: whitebards & pens, cmputers with VPythn, pwer supply & cables, multimeter, crkbard, thumbtacks, individual prbes and jined prbes,
More informationLecture 17: Free Energy of Multi-phase Solutions at Equilibrium
Lecture 17: 11.07.05 Free Energy f Multi-phase Slutins at Equilibrium Tday: LAST TIME...2 FREE ENERGY DIAGRAMS OF MULTI-PHASE SOLUTIONS 1...3 The cmmn tangent cnstructin and the lever rule...3 Practical
More informationChapter 19. Electrochemistry. Dr. Al Saadi. Electrochemistry
Chapter 19 lectrchemistry Part I Dr. Al Saadi 1 lectrchemistry What is electrchemistry? It is a branch f chemistry that studies chemical reactins called redx reactins which invlve electrn transfer. 19.1
More informationFinding the Earth s magnetic field
Labratry #6 Name: Phys 1402 - Dr. Cristian Bahrim Finding the Earth s magnetic field The thery accepted tday fr the rigin f the Earth s magnetic field is based n the mtin f the plasma (a miture f electrns
More informationFebruary 28, 2013 COMMENTS ON DIFFUSION, DIFFUSIVITY AND DERIVATION OF HYPERBOLIC EQUATIONS DESCRIBING THE DIFFUSION PHENOMENA
February 28, 2013 COMMENTS ON DIFFUSION, DIFFUSIVITY AND DERIVATION OF HYPERBOLIC EQUATIONS DESCRIBING THE DIFFUSION PHENOMENA Mental Experiment regarding 1D randm walk Cnsider a cntainer f gas in thermal
More informationElectrochemistry. Half-Reactions 1. Balancing Oxidation Reduction Reactions in Acidic and Basic Solutions
Electrchemistry Half-Reactins 1. Balancing Oxidatin Reductin Reactins in Acidic and Basic Slutins Vltaic Cells 2. Cnstructin f Vltaic Cells 3. Ntatin fr Vltaic Cells 4. Cell Ptential 5. Standard Cell Ptentials
More information1 Written and composed by: Prof. Muhammad Ali Malik (M. Phil. Physics), Govt. Degree College, Naushera
CURRENT ELECTRICITY Q # 1. What do you know about electric current? Ans. Electric Current The amount of electric charge that flows through a cross section of a conductor per unit time is known as electric
More informationA) 0.77 N B) 0.24 N C) 0.63 N D) 0.31 N E) 0.86 N. v = ω k = 80 = 32 m/s. Ans: (32) 2 = 0.77 N
Q1. A transverse sinusidal wave travelling n a string is given by: y (x,t) = 0.20 sin (2.5 x 80 t) (SI units). The length f the string is 2.0 m and its mass is 1.5 g. What is the magnitude f the tensin
More informationStudy Guide- Bare Bones list Physics Comprehensive Exam 2014
Study Guide- Bare Bnes list Physics Cmprehensive Exam 2014 I. Scientific Measurement Metric Units S.I. English Length Meter (m) Feet (ft.) Mass Kilgram (kg) Pund (lb.) Weight Newtn (N) Ounce (z.) r pund
More informationPHYS 219 Spring semester Lecture 02: Coulomb s Law how point charges interact. Ron Reifenberger Birck Nanotechnology Center Purdue University
PHYS 19 Spring semester 016 Lecture 0: Culmb s Law hw pint charges interact Rn Reifenberger Birck Nantechnlg Center Purdue Universit Lecture 0 1 Earl Develpments in Electrstatics Tw f the ur rces in Nature:
More informationPHYSICS 2004 (Delhi Region)
PYSP 004 / Class X 1 PHYSCS 004 (Delhi Regin) Time llwed: 3 Hurs M. Marks: 70 General nstructins: (a) ll questins are cmpulsry. (b) There are 30 questins in ttal. Questin 1 t 8 carry ne mark each, questins
More informationLecture 13: Electrochemical Equilibria
3.012 Fundamentals f Materials Science Fall 2005 Lecture 13: 10.21.05 Electrchemical Equilibria Tday: LAST TIME...2 An example calculatin...3 THE ELECTROCHEMICAL POTENTIAL...4 Electrstatic energy cntributins
More informationA Novel Isolated Buck-Boost Converter
vel slated uck-st Cnverter S-Sek Kim *,WOO-J JG,JOOG-HO SOG, Ok-K Kang, and Hee-Jn Kim ept. f Electrical Eng., Seul atinal University f Technlgy, Krea Schl f Electrical and Cmputer Eng., Hanyang University,
More informationChapter 5: Diffusion (2)
Chapter 5: Diffusin () ISSUES TO ADDRESS... Nn-steady state diffusin and Fick s nd Law Hw des diffusin depend n structure? Chapter 5-1 Class Eercise (1) Put a sugar cube inside a cup f pure water, rughly
More informationChapter 2 SOUND WAVES
Chapter SOUND WAVES Intrductin: A sund wave (r pressure r cmpressin wave) results when a surface (layer f mlecules) mves back and frth in a medium prducing a sequence f cmpressins C and rarefactins R.
More information