Student number: Question # Mark Maximum Mark. Multiple Choice 20
|
|
- Avis Hill
- 5 years ago
- Views:
Transcription
1 Name: Student number: Academic Honesty: Cheating in an examination includes the following: 1. the unauthorized sharing of material such as textbooks during an open book examination; 2. concealing information pertaining to the examination in the examination room, or in washrooms or other places in the vicinity of the examination room; 3. using course notes or any other aids not approved by an nstructor during an examination; or, 4. the unauthorized possession or use of an examination question sheet, an examination answer book, or a completed examination or assignment. Question # Mark Maximum Mark Multiple Choice Total= /60 Enter your answers to the multiple choice questions here by blackening in the circle corresponding to the best answer. There is only one answer per question. 1. A B C D E 2. A B C D E 3. A B C D E 4. A B C D E 5. A B C D E 6. A B C D E 7. A B C D E 8. A B C D E 9. A B C D E 10. A B C D E 1
2 There are 10 multiple choice questions. Select the correct answer for each one and mark it on the bubble form. Each question has only one correct answer. (2 marks each) 1. A constant current,, is supplied for a brief time to charge a parallel plate capacitor. The capacitor has circular plates of radius R with a gap d (d << R). A B C D At which of the positions A, B, C or D is the magnetic field the smallest? (a) A (b) B (c) C Correct (d) D (e) The magnetic field is zero at all of A, B and C. When a battery is in use current flows through the small internal resistor r causing the voltage across the external terminals to be less than the ideal voltage. The battery connected to two 1R resistors draws more current and thus reduces the output voltage of the battery more than the one connected to a singl 1R resistor. 3. Two long straight current-carrying parallel wires cross the x axis and carry currents and 3 in the same direction, as shown. At what value of x is the net magnetic field zero? Point C is at the centre of the capacitor plates, so the area enclosed by the circular pathlength through C around the centre is zero: Φ E = 0. Therefore, of the circulation calculation B d l = 0. Since B must be equal in magnitude given the symmetry of the capacitor, B = 0. Other points have nonzero pathlengths that enclose changing electrical flux or enclose current. 2. The real batteries and the resistors in both cases illustrated above are identical. n which case is the voltage across the terminals of the battery closest to the ideal battery voltage V 0? (a) 0 (b) 1m (c) 3 m (d) 5m correct (e) 7m The magnetic field scales as /R so (a) The voltage across the terminals of the battery is closest to ideal in Case A. Correct (b) The voltage across the terminals of the battery is the same in both cases. (c) The voltage across the terminals of the battery is closest to ideal in Case B /3 = R 2 /R 1 = (D x)/x where x is the distance from the 1 mark on the ruler. D = 4 so x = 3. The 5 position is 3 times farther from the left-hand wire that carries 1/3 the current of the right-hand one. 2
3 4. Consider a long wire running in the vertical direction with a rectangular loop of wire beside it as shown. Which of the following situations would result in a clockwise induced current in the loop? (a) A current in the long wire, directed upward, is increasing in magnitude. (b) With a constant current in the long wire directed upward, the loop is moved toward the top of the page, parallel to the long wire. (c) The loop is held stationary and the long wire, while carrying a constant upward current, is moved away from the loop. Correct The upward current in the long wire results in a magnetic field through the down directed into the page. By moving the wire farther from the loop, there is a reduction in the downward B field through the loop, so a clockwise induced current would serve to inhibit the decrease in B through the loop as required b Lenz s law. 5. A long, straight wire of radius a carries a steady current. The graph of magnetic field strength B(r) as a function of perpendicular distance r from the centre of the wire is: nside the wire, the circle passing through position r encloses more and more current inside, implying larger magnetic field at that point. When r increases outside the wire, the total current enclosed remains the same which by Ampere s law implies that B decreases as 1/r. 3
4 The next two questions relate to the situation described below. Which of the three emerging beams contains the isotope of the largest mass assuming the ions are equally charged? A tiny wire loop in the xz plane carries a current and is inside a larger loop in the xy plane as shown. Both carry a current. z positive ion beam magnet A BC x 6. What is the direction of the magnetic moment of the small loop? (a) ˆx (b) ˆx (c) ŷ Correct (d) ẑ (e) ẑ Curl the fingers of your right hand in the direction of the current and your thumb points in the ŷ direction. 7. What is the direction of the torque on the small loop? (a) ˆx (b) ˆx (c) ŷ (d) ẑ (e) ẑ The lowest energy occurs when the magnetic moments of the two loops align so the torque will flip the small loop around the x axis, clockwise when looking down the x axis when viewed looking towards the origin from its positive end. Curling your fingers around the x axis in the direction of the flip, and the thumb points in the ˆx direction. 8. Singly charged ions are projected with the same speed through a region of magnetic field in which they are bent in a 90 arc. sotopes of different masses are separated during their trajectory. y on source Beam A must have the largest mass because it s radius is larger. t takes more force to bend a beam of particles whose mass is larger, but charge and velocity are the same. 9. n the Faraday s Law experiment you did in class, which of the following describes your qualitative results when the oscilloscope channel 1 displays the voltage across the resistor attached to the field coil and channel 2 displays the emf from the pickup coil. (a) When channel 1 displays a square wave, channel 2 displays a square wave (b) When channel 1 displays a square wave, channel 2 displays a triangle wave Correct (c) When channel 2 displays a square wave, channel 1 displays a triangle wave (d) When channel 2 displays a sine wave, channel 1 displays a square wave (e) When channel 1 displays a sine wave, channel 2 displays a triangle wave Channel 2 must have the shape of the derivative of the signal in channel A capacitor, in series with a resistor, is being charged. At the end of 10 ms the charge on its positive plate is half the final value. The time constant for the process is about (a) 0.43 ms (b) 2.3 ms (c) 6.9 ms (d) 10 ms (e) 14 ms 4
5 Let t h represent the half life and τ the time constant. V(t) = V 0 (1 e t h/τ ) = 0.5V 0 e t h/τ = (1 0.5) t h /τ = ln(0.5) τ = 10/ ln(0.5) = 14.4 s There are four written problems. Show all your work to get full credit. and give answers to at least 3 significant figures. Consider all values exact 11. n the following circuit V 1 = 20 V, V 2 = 4.5 V, R 1 = 5 ohm, R 1 = 5 ohm, R 2 = 10 ohm, R 3 = 15 ohm, R 4 = 20 ohm. (a) Use Kirchhoff s rules to find equations which will allow determining the currents 1, 2 and 3. : V1 V2 1*R4 = 0 : 1*R4-3*R2 4*R1 = 0 : V1 5*R3 3*R2 = 0 V: V2-4*R1-5*R3 V: = 0 V: = 0 V V Three of (,,, and V) plus V and V can give a complete solution. 4 and 5 have to be inserted by the student and may be different from what is done here. Allow for that when grading. (b) t turns out that 3 = 1.7 A. f so find the potential difference between points a and b. V ab = = 17 V V 5
6 12. A wire of length 10 cm and mass 10 g, and resistance 0.10 ohm is constrained to fall while in contact with a u-shaped conducting frame as shown in the figure. There is a uniform magnetic field of 0.10 T directed horizontally, perpendicular to the falling wire. (a) f the rod is falling with speed v, what is the EMF induced in the loop? The rate of change of the area in the loop is da/dt = lv. Φ B dt = Blv = E Where l is the length of the wire or the width of the U-frame. (b) At speed v what is the Lorentz force on the wire due to the magnetic field? F = l B Where l is the length of the wire (or the width of the U-frame. Calculating magnitudes = E/R F = B 2 l 2 v/r (b) Calculate the steady-state velocity of the wire, v t. Terminal velocity v t occurs when F = m g Therefore F = B 2 l 2 v t /R = mg Which turns out to be 98 m/s. v t = Rmg B 2 l 2 6
7 13. n the series LRC circuit shown, L = 0.10 mh and R = 100 ohms and C = 10 µ F. (a) Draw the phasor diagram for the resistances, reactances and total impedance when ω = 2000 rad/s. X L R R X C Z total L C Phasor Diagram (b) What frequency ω (in rad/s) is necessary in order for the voltage amplitudes measured across the resistor and across the capacitor to be equal? ω = 1/RC = 1000 rad/sec (c) At this frequency, what is the phase shift, φ between V C and V R. Specify whether V C leads or lags V R. 90 deg or π/2. V R leads V C. (d) What is the resonant frequency of the circuit in Hz? ω 0 = 1/ LC, f = ω/2π = 5032 Hz Hz is close enough. (e) How much energy is dissipated in the resistor per cycle at resonance? Energy in one cycle is PT = E 2 rms/r f = E 2 /2R f where T is the period and f the frequency. The value of E isn t specified so symbolic answer is good enough. F they use E then they should divide by 2. 7
8 14. A plane electromagnetic wave in a vacuum is given by E = 5( î ĵ) sin(kz ωt) V/m B = B 0 sin(kz ωt) where k = 2π λ and ω = 4π 1015 rad/s (a) What is E 0? E 0 = 5 2 V/m (b) n what direction does the wave propagate? How do you know? t propagates in the z direction because kz ωt has the same sign in both terms. (c) What is B 0? (magnitude and direction) B 0 = 5( î ĵ)/c = (5/3)( î ĵ) 10 8 T (this is good enough. Or B 0 = 5 2/c T at -45.) (d) What is the wavelength, λ, in metres? λ = 2πc/ω = m (e) Describe the polarization state as accurately as you can. (Specify angles from an axis if linear, or handedness if circular or elliptical. Draw a well-labelled picture.) Linear polarized 135 degrees from the x axis. 8
Physics 240 Fall 2005: Exam #3 Solutions. Please print your name: Please list your discussion section number: Please list your discussion instructor:
Physics 4 Fall 5: Exam #3 Solutions Please print your name: Please list your discussion section number: Please list your discussion instructor: Form #1 Instructions 1. Fill in your name above. This will
More informationSolutions to PHY2049 Exam 2 (Nov. 3, 2017)
Solutions to PHY2049 Exam 2 (Nov. 3, 207) Problem : In figure a, both batteries have emf E =.2 V and the external resistance R is a variable resistor. Figure b gives the electric potentials V between the
More informationPHYSICS : CLASS XII ALL SUBJECTIVE ASSESSMENT TEST ASAT
PHYSICS 202 203: CLASS XII ALL SUBJECTIVE ASSESSMENT TEST ASAT MM MARKS: 70] [TIME: 3 HOUR General Instructions: All the questions are compulsory Question no. to 8 consist of one marks questions, which
More informationAP Physics C. Magnetism - Term 4
AP Physics C Magnetism - Term 4 Interest Packet Term Introduction: AP Physics has been specifically designed to build on physics knowledge previously acquired for a more in depth understanding of the world
More informationPHYS 241 EXAM #2 November 9, 2006
1. ( 5 points) A resistance R and a 3.9 H inductance are in series across a 60 Hz AC voltage. The voltage across the resistor is 23 V and the voltage across the inductor is 35 V. Assume that all voltages
More informationInduction and Inductance
Welcome Back to Physics 1308 Induction and Inductance Michael Faraday 22 September 1791 25 August 1867 Announcements Assignments for Tuesday, November 6th: - Reading: Chapter 30.6-30.8 - Watch Videos:
More informationMansfield Independent School District AP Physics C: Electricity and Magnetism Year at a Glance
Mansfield Independent School District AP Physics C: Electricity and Magnetism Year at a Glance First Six-Weeks Second Six-Weeks Third Six-Weeks Lab safety Lab practices and ethical practices Math and Calculus
More informationPhysics 240 Fall 2005: Exam #3. Please print your name: Please list your discussion section number: Please list your discussion instructor:
Physics 240 Fall 2005: Exam #3 Please print your name: Please list your discussion section number: Please list your discussion instructor: Form #1 Instructions 1. Fill in your name above 2. This will be
More informationPhysics 208, Spring 2016 Exam #3
Physics 208, Spring 206 Exam #3 A Name (Last, First): ID #: Section #: You have 75 minutes to complete the exam. Formulae are provided on an attached sheet. You may NOT use any other formula sheet. You
More informationExam 2, Phy 2049, Spring Solutions:
Exam 2, Phy 2049, Spring 2017. Solutions: 1. A battery, which has an emf of EMF = 10V and an internal resistance of R 0 = 50Ω, is connected to three resistors, as shown in the figure. The resistors have
More information3/31/2014. Resistors in series. Resistors in parallel. Ohm s Law. Review for Test 2. Electric Power (cont d) V IR. R constant I
Ohm s Law eview for Test Ohm s law states that the current flowing through a piece of material is proportional to the voltage applied across the material. The resistance () is defined as the ratio of to.
More informationAP Physics C Mechanics Objectives
AP Physics C Mechanics Objectives I. KINEMATICS A. Motion in One Dimension 1. The relationships among position, velocity and acceleration a. Given a graph of position vs. time, identify or sketch a graph
More informationAP Physics C. Electricity - Term 3
AP Physics C Electricity - Term 3 Interest Packet Term Introduction: AP Physics has been specifically designed to build on physics knowledge previously acquired for a more in depth understanding of the
More informationCh. 23 Electromagnetic Induction, AC Circuits, And Electrical Technologies
Ch. 23 Electromagnetic Induction, AC Circuits, And Electrical Technologies Induced emf - Faraday s Experiment When a magnet moves toward a loop of wire, the ammeter shows the presence of a current When
More informationPhysics 2220 Fall 2010 George Williams THIRD MIDTERM - REVIEW PROBLEMS
Physics 2220 Fall 2010 George Williams THIRD MIDTERM - REVIEW PROBLEMS Solution sets are available on the course web site. A data sheet is provided. Problems marked by "*" do not have solutions. 1. An
More informationA) I B) II C) III D) IV E) V
1. A square loop of wire moves with a constant speed v from a field-free region into a region of uniform B field, as shown. Which of the five graphs correctly shows the induced current i in the loop as
More informationPHY 131 Review Session Fall 2015 PART 1:
PHY 131 Review Session Fall 2015 PART 1: 1. Consider the electric field from a point charge. As you move farther away from the point charge, the electric field decreases at a rate of 1/r 2 with r being
More informationb) (4) How large is the current through the 2.00 Ω resistor, and in which direction?
General Physics II Exam 2 - Chs. 19 21 - Circuits, Magnetism, EM Induction - Sep. 29, 2016 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results
More informationYell if you have any questions
Class 31: Outline Hour 1: Concept Review / Overview PRS Questions possible exam questions Hour : Sample Exam Yell if you have any questions P31 1 Exam 3 Topics Faraday s Law Self Inductance Energy Stored
More informationExam 2 Solutions. ε 3. ε 1. Problem 1
Exam 2 Solutions Problem 1 In the circuit shown, R1=100 Ω, R2=25 Ω, and the ideal batteries have EMFs of ε1 = 6.0 V, ε2 = 3.0 V, and ε3 = 1.5 V. What is the magnitude of the current flowing through resistor
More informationSUMMARY Phys 2523 (University Physics II) Compiled by Prof. Erickson. F e (r )=q E(r ) dq r 2 ˆr = k e E = V. V (r )=k e r = k q i. r i r.
SUMMARY Phys 53 (University Physics II) Compiled by Prof. Erickson q 1 q Coulomb s Law: F 1 = k e r ˆr where k e = 1 4π =8.9875 10 9 N m /C, and =8.85 10 1 C /(N m )isthepermittivity of free space. Generally,
More informationExam 2 Solutions. Note that there are several variations of some problems, indicated by choices in parentheses.
Exam 2 Solutions Note that there are several variations of some problems, indicated by choices in parentheses. Problem 1 Part of a long, straight insulated wire carrying current i is bent into a circular
More informationGen. Phys. II Exam 2 - Chs. 21,22,23 - Circuits, Magnetism, EM Induction Mar. 5, 2018
Gen. Phys. II Exam 2 - Chs. 21,22,23 - Circuits, Magnetism, EM Induction Mar. 5, 2018 Rec. Time Name For full credit, make your work clear. Show formulas used, essential steps, and results with correct
More informationSlide 1 / 24. Electromagnetic Induction 2011 by Bryan Pflueger
Slide 1 / 24 Electromagnetic Induction 2011 by Bryan Pflueger Slide 2 / 24 Induced Currents If we have a galvanometer attached to a coil of wire we can induce a current simply by changing the magnetic
More informationELECTRO MAGNETIC INDUCTION
ELECTRO MAGNETIC INDUCTION 1) A Circular coil is placed near a current carrying conductor. The induced current is anti clock wise when the coil is, 1. Stationary 2. Moved away from the conductor 3. Moved
More informationLouisiana State University Physics 2102, Exam 3 April 2nd, 2009.
PRINT Your Name: Instructor: Louisiana State University Physics 2102, Exam 3 April 2nd, 2009. Please be sure to PRINT your name and class instructor above. The test consists of 4 questions (multiple choice),
More informationPhysics 2135 Exam 2 October 20, 2015
Exam Total / 200 Physics 2135 Exam 2 October 20, 2015 Printed Name: Rec. Sec. Letter: Five multiple choice questions, 8 points each. Choose the best or most nearly correct answer. 1. A straight wire segment
More information= e = e 3 = = 4.98%
PHYS 212 Exam 2 - Practice Test - Solutions 1E In order to use the equation for discharging, we should consider the amount of charge remaining after three time constants, which would have to be q(t)/q0.
More informationEXAM 3: SOLUTIONS. B = B. A 2 = BA 2 cos 0 o = BA 2. =Φ(2) B A 2 = A 1 cos 60 o = A 1 2 =0.5m2
EXAM : S Q.The normal to a certain m area makes an angle of 6 o with a uniform magnetic field. The magnetic flux through this area is the same as the flux through a second area that is perpendicular to
More informationI. Impedance of an R-L circuit.
I. Impedance of an R-L circuit. [For inductor in an AC Circuit, see Chapter 31, pg. 1024] Consider the R-L circuit shown in Figure: 1. A current i(t) = I cos(ωt) is driven across the circuit using an AC
More informationP202 Practice Exam 2 Spring 2004 Instructor: Prof. Sinova
P202 Practice Exam 2 Spring 2004 Instructor: Prof. Sinova Name: Date: (5)1. How many electrons flow through a battery that delivers a current of 3.0 A for 12 s? A) 4 B) 36 C) 4.8 10 15 D) 6.4 10 18 E)
More informationGeneral Physics (PHY 2140)
General Physics (PHY 2140) Lecture 10 6/12/2007 Electricity and Magnetism Induced voltages and induction Self-Inductance RL Circuits Energy in magnetic fields AC circuits and EM waves Resistors, capacitors
More informationFigure 1 A) 2.3 V B) +2.3 V C) +3.6 V D) 1.1 V E) +1.1 V Q2. The current in the 12- Ω resistor shown in the circuit of Figure 2 is:
Term: 13 Wednesday, May 1, 014 Page: 1 Q1. What is the potential difference V B -V A in the circuit shown in Figure 1 if R 1 =70.0 Ω, R=105 Ω, R 3 =140 Ω, ε 1 =.0 V and ε =7.0 V? Figure 1 A).3 V B) +.3
More informationPHYS 1102 EXAM - II. SECTION: (Circle one) 001 (TH 9:30 AM to 10:45AM) 002 (TH 3:30 PM to 4:45 PM) You have 1 hr 45 minutes to complete the test
PHYS 1102 EXAM - II SECTION: (Circle one) 001 (TH 9:30 AM to 10:45AM) 002 (TH 3:30 PM to 4:45 PM) Your Name: Student ID: You have 1 hr 45 minutes to complete the test PLEASE DO NOT START TILL YOU ARE INSTRUCTED
More informationCalculus Relationships in AP Physics C: Electricity and Magnetism
C: Electricity This chapter focuses on some of the quantitative skills that are important in your C: Mechanics course. These are not all of the skills that you will learn, practice, and apply during the
More informationPhysics for Scientists and Engineers 4th Edition 2017
A Correlation and Narrative Summary of Physics for Scientists and Engineers 4th Edition 2017 To the AP Physics C: Electricity and Magnetism Course Description AP is a trademark registered and/or owned
More information1. Write the relation for the force acting on a charge carrier q moving with velocity through a magnetic field in vector notation. Using this relation, deduce the conditions under which this force will
More informationExam 3 Topics. Displacement Current Poynting Vector. Faraday s Law Self Inductance. Circuits. Energy Stored in Inductor/Magnetic Field
Exam 3 Topics Faraday s Law Self Inductance Energy Stored in Inductor/Magnetic Field Circuits LR Circuits Undriven (R)LC Circuits Driven RLC Circuits Displacement Current Poynting Vector NO: B Materials,
More informationq v A. Toward the top of this page B. Toward the bottom of this page C. Into this page D. Out of this page screen
q v? An electron moves horizontally toward a screen. The electron moves along the dotted path because of a magnetic force caused by a magnetic field. In what direction does that magnetic field point? A.
More information1 Fig. 3.1 shows the variation of the magnetic flux linkage with time t for a small generator. magnetic. flux linkage / Wb-turns 1.
1 Fig. 3.1 shows the variation of the magnetic flux linkage with time t for a small generator. 2 magnetic 1 flux linkage / 0 10 2 Wb-turns 1 2 5 10 15 t / 10 3 s Fig. 3.1 The generator has a flat coil
More informationPHYSICS 2B FINAL EXAM ANSWERS WINTER QUARTER 2010 PROF. HIRSCH MARCH 18, 2010 Problems 1, 2 P 1 P 2
Problems 1, 2 P 1 P 1 P 2 The figure shows a non-conducting spherical shell of inner radius and outer radius 2 (i.e. radial thickness ) with charge uniformly distributed throughout its volume. Prob 1:
More informationThe next two questions pertain to the situation described below. Consider a parallel plate capacitor with separation d:
PHYS 102 Exams Exam 2 PRINT (A) The next two questions pertain to the situation described below. Consider a parallel plate capacitor with separation d: It is connected to a battery with constant emf V.
More information1 2 U CV. K dq I dt J nqv d J V IR P VI
o 5 o T C T F 3 9 T K T o C 73.5 L L T V VT Q mct nct Q F V ml F V dq A H k TH TC L pv nrt 3 Ktr nrt 3 CV R ideal monatomic gas 5 CV R ideal diatomic gas w/o vibration V W pdv V U Q W W Q e Q Q e Carnot
More information2006 #3 10. a. On the diagram of the loop below, indicate the directions of the magnetic forces, if any, that act on each side of the loop.
1992 1 1994 2 3 3 1984 4 1991 5 1987 6 1980 8 7 9 2006 #3 10 1985 2006E3. A loop of wire of width w and height h contains a switch and a battery and is connected to a spring of force constant k, as shown
More informationChapter 12. Magnetism and Electromagnetism
Chapter 12 Magnetism and Electromagnetism 167 168 AP Physics Multiple Choice Practice Magnetism and Electromagnetism SECTION A Magnetostatics 1. Four infinitely long wires are arranged as shown in the
More informationPhys102 Final-163 Zero Version Coordinator: Saleem Rao Tuesday, August 22, 2017 Page: 1. = m/s
Coordinator: Saleem Rao Tuesday, August 22, 2017 Page: 1 Q1. A 125 cm long string has a mass of 2.00 g and a tension of 7.00 N. Find the lowest resonant frequency of the string. A) 2.5 Hz B) 53.0 Hz C)
More informationa) head-on view b) side view c) side view Use the right hand rule for forces to confirm the direction of the force in each case.
Electromagnetism Magnetic Force on a Wire Magnetic Field around a Bar Magnet Direction of magnetic field lines: the direction that the North pole of a small test compass would point if placed in the field
More informationPhysics 227 Final Exam December 18, 2007 Prof. Coleman and Prof. Rabe. Useful Information. Your name sticker. with exam code
Your name sticker with exam code Physics 227 Final Exam December 18, 2007 Prof. Coleman and Prof. Rabe SIGNATURE: 1. The exam will last from 4:00 p.m. to 7:00 p.m. Use a #2 pencil to make entries on the
More informationElectromagnetic Induction Faraday s Law Lenz s Law Self-Inductance RL Circuits Energy in a Magnetic Field Mutual Inductance
Lesson 7 Electromagnetic Induction Faraday s Law Lenz s Law Self-Inductance RL Circuits Energy in a Magnetic Field Mutual Inductance Oscillations in an LC Circuit The RLC Circuit Alternating Current Electromagnetic
More informationFig. 2.1 I =... A [2] Suggest why it would be impossible for overhead cables carrying an alternating current to float in the Earth s magnetic field.
1 (a) Fig. 2.1 shows a horizontal current-carrying wire placed in a uniform magnetic field. I region of uniform magnetic field wire Fig. 2.1 The magnetic field of flux density 0.070 T is at right angles
More informationElectromagnetism IB 12
Electromagnetism Magnetic Field around a Bar Magnet Direction of magnetic field lines: the direction that the North pole of a small test compass would point if placed in the field (N to S) What is the
More informationf n+2 f n = 2 = = 40 H z
Coordinator: Dr.I.M.Nasser Monday, May 18, 2015 Page: 1 Q1. Q2. One end of a stretched string vibrates with a period of 1.5 s. This results in a wave propagating at a speed of 8.0 m/s along the string.
More informationLouisiana State University Physics 2102, Exam 3, November 11, 2010.
Name: Instructor: Louisiana State University Physics 2102, Exam 3, November 11, 2010. Please be sure to write your name and class instructor above. The test consists of 3 questions (multiple choice), and
More informationMagnets. Domain = small magnetized region of a magnetic material. all the atoms are grouped together and aligned
Magnetic Fields Magnets Domain = small magnetized region of a magnetic material all the atoms are grouped together and aligned Magnets Ferromagnetic materials domains can be forced to line up by applying
More informationFIRST TERM EXAMINATION (07 SEPT 2015) Paper - PHYSICS Class XII (SET B) Time: 3hrs. MM: 70
FIRST TERM EXAMINATION (07 SEPT 205) Paper - PHYSICS Class XII (SET B) Time: 3hrs. MM: 70 Instructions:. All questions are compulsory. 2. Q.no. to 5 carry mark each. 3. Q.no. 6 to 0 carry 2 marks each.
More informationFinal Exam: Physics Spring, 2017 May 8, 2017 Version 01
Final Exam: Physics2331 - Spring, 2017 May 8, 2017 Version 01 NAME (Please Print) Your exam should have 11 pages. This exam consists of 18 multiple-choice questions (2 points each, worth 36 points), and
More informationAP Physics Electromagnetic Wrap Up
AP Physics Electromagnetic Wrap Up Here are the glorious equations for this wonderful section. This is the equation for the magnetic force acting on a moving charged particle in a magnetic field. The angle
More informationImpedance/Reactance Problems
Impedance/Reactance Problems. Consider the circuit below. An AC sinusoidal voltage of amplitude V and frequency ω is applied to the three capacitors, each of the same capacitance C. What is the total reactance
More informationPHYSICS ASSIGNMENT ES/CE/MAG. Class XII
PHYSICS ASSIGNMENT ES/CE/MAG Class XII MM : 70 1. What is dielectric strength of a medium? Give its value for vacuum. 1 2. What is the physical importance of the line integral of an electrostatic field?
More informationUnit 4 Magnetism Essential Fundamentals of Magnetism 1. Magnetism is a fundamental force.
Unit 4 Magnetism Essential Fundamentals of Magnetism 1. Magnetism is a fundamental force. Early Booklet E.C.: + 1 Unit 4 Hwk. Pts.: / 34 Unit 4 Lab Pts.: / 36 Late, Incomplete, No Work, No Units Fees?
More informationPhysics 54 Lecture March 1, Micro-quiz problems (magnetic fields and forces) Magnetic dipoles and their interaction with magnetic fields
Physics 54 Lecture March 1, 2012 OUTLINE Micro-quiz problems (magnetic fields and forces) Magnetic dipoles and their interaction with magnetic fields Electromagnetic induction Introduction to electromagnetic
More informationPH202-NG Test 2 (July. 7, 2009, 3:00PM-5:05PM)
name Write your name also in the back of the last page. blazer id [a] PH202-NG Test 2 (July. 7, 2009, 3:00PM-5:05PM) You may not open the textbook nor notebook. A letter size information may be used. A
More informationNotes and Solved Problems for Common Exam 3 (Does not include Induction)
Notes and Solved Problems for Common Exam 3 (Does not include Induction) 8. MULTI LOOP CIRCUITS Key concepts: Multi loop circuits of batteries and resistors: loops, branches and junctions should be distinguished.
More informationElectromagnetic Induction Practice Problems Homework PSI AP Physics B
Electromagnetic Induction Practice Problems Homework PSI AP Physics B Name Multiple Choice Questions 1. A square loop of wire is placed in a uniform magnetic field perpendicular to the magnetic lines.
More informationPHYS102 Previous Exam Problems. Induction
PHYS102 Previous Exam Problems CHAPTER 30 Induction Magnetic flux Induced emf (Faraday s law) Lenz law Motional emf 1. A circuit is pulled to the right at constant speed in a uniform magnetic field with
More informationPhysics 2B Winter 2012 Final Exam Practice
Physics 2B Winter 2012 Final Exam Practice 1) When the distance between two charges is increased, the force between the charges A) increases directly with the square of the distance. B) increases directly
More informationVersion 001 CIRCUITS holland (1290) 1
Version CIRCUITS holland (9) This print-out should have questions Multiple-choice questions may continue on the next column or page find all choices before answering AP M 99 MC points The power dissipated
More informationQ1. A wave travelling along a string is described by
Coordinator: Saleem Rao Wednesday, May 24, 2017 Page: 1 Q1. A wave travelling along a string is described by y( x, t) = 0.00327 sin(72.1x 2.72t) In which all numerical constants are in SI units. Find the
More informationTwo point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation.
Use the following to answer question 1. Two point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation. 1. Which combination of charges would yield
More informationPhys 0175 Midterm Exam III Solutions Apr 3, 2008
Phys 0175 Midterm Exam III Solutions Apr 3, 2008 1. (8 pts) A particular capacitor has a separation between its plates of 0.03 mm. The area of one plate is 16 m 2. The capacitor is initially uncharged.
More informationOn my honor, I have neither given nor received unauthorized aid on this examination.
Instructor(s): F.E. Dunnam PHYSICS DEPARTMENT PHY 2054 2nd Exam 08 July 2008 Name (print, last first): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. YOUR
More informationMASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics Spring 2014 Final Exam Equation Sheet. B( r) = µ o 4π
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2014 Final Exam Equation Sheet Force Law: F q = q( E ext + v q B ext ) Poynting Vector: S = ( E B) / µ 0 Force on Current Carrying
More informationcancel each other out. Thus, we only need to consider magnetic field produced by wire carrying current 2.
PC1143 2011/2012 Exam Solutions Question 1 a) Assumption: shells are conductors. Notes: the system given is a capacitor. Make use of spherical symmetry. Energy density, =. in this case means electric field
More informationProblem Solving 6: Ampere s Law and Faraday s Law. Part One: Ampere s Law
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics: 8.02 Problem Solving 6: Ampere s Law and Faraday s Law Section Table Names Hand in one copy per group at the end of the Friday Problem Solving
More informationPhysics 212 Midterm 2 Form A
1. A wire contains a steady current of 2 A. The charge that passes a cross section in 2 s is: A. 3.2 10-19 C B. 6.4 10-19 C C. 1 C D. 2 C E. 4 C 2. In a Physics 212 lab, Jane measures the current versus
More informationPhysics 180B Fall 2008 Test Points
Physics 180B Fall 2008 Test 2-120 Points Name You can cross off questions or problems worth up to15 points. Circle your answers or pu them in the box provided. 1) The diagram represents a one loop coil
More information18 - ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS ( Answers at the end of all questions ) Page 1
( Answers at the end of all questions ) Page ) The self inductance of the motor of an electric fan is 0 H. In order to impart maximum power at 50 Hz, it should be connected to a capacitance of 8 µ F (
More informationAPRIL 2015 EXAMINATION version A PHY 132H1S Duration - 2 hours
Family Name Given Name(s) Student Number Practical Group (Please print in BLOCK LETTERS) as on student card Code as on student card UNIVERSITY OF TORONTO Faculty of Arts and Science APRIL 2015 EXAMINATION
More informationPHY2049 Fall11. Final Exam Solutions (1) 700 N (2) 350 N (3) 810 N (4) 405 N (5) 0 N
Exam Solutions 1. Three charges form an equilateral triangle of side length d = 2 cm. The top charge is q3 = 3 μc, while the bottom two are q1 = q2 = - 6 μc. What is the magnitude of the net force acting
More informationVersion 001 HW 22 EM Induction C&J sizemore (21301jtsizemore) 1
Version 001 HW 22 EM Induction C&J sizemore (21301jtsizemore) 1 This print-out should have 35 questions. Multiple-choice questions may continue on the next column or page find all choices before answering.
More information8. (6) Consider the circuit here with resistors R A, R B and R C. Rank the
General Physics II Exam 2 - Chs. 18B 21 - Circuits, Magnetism, EM Induction - Oct. 3, 2013 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results
More informationPROBLEMS TO BE SOLVED IN CLASSROOM
PROLEMS TO E SOLVED IN LSSROOM Unit 0. Prerrequisites 0.1. Obtain a unit vector perpendicular to vectors 2i + 3j 6k and i + j k 0.2 a) Find the integral of vector v = 2xyi + 3j 2z k along the straight
More informationPart 4: Electromagnetism. 4.1: Induction. A. Faraday's Law. The magnetic flux through a loop of wire is
1 Part 4: Electromagnetism 4.1: Induction A. Faraday's Law The magnetic flux through a loop of wire is Φ = BA cos θ B A B = magnetic field penetrating loop [T] A = area of loop [m 2 ] = angle between field
More informationMagnetized Material (contd.) and Electromagnetic Induction
Magnetized Material (contd.) and Electromagnetic Induction Lecture 28: Electromagnetic Theory Professor D. K. Ghosh, Physics Department, I.I.T., Bombay In the first half of this lecture we will continue
More informationa. Clockwise. b. Counterclockwise. c. Out of the board. d. Into the board. e. There will be no current induced in the wire
Physics 1B Winter 2012: Final Exam For Practice Version A 1 Closed book. No work needs to be shown for multiple-choice questions. The first 10 questions are the makeup Quiz. The remaining questions are
More informationChapter In Fig , the magnetic flux through the loop increases according to the relation Φ B. =12.0t
Chapter 30 30.1 In Fig. 30-37, the magnetic lux through the loop increases according to the relation = 6.0t 2 + 7.0t where the lux is in milliwebers and t is in seconds. (a) What is the magnitude o the
More informationPhysics 212 Question Bank III 2010
A negative charge moves south through a magnetic field directed north. The particle will be deflected (A) North. () Up. (C) Down. (D) East. (E) not at all.. A positive charge moves West through a magnetic
More informationUniversity of the Philippines College of Science PHYSICS 72. Summer Second Long Problem Set
University of the Philippines College of Science PHYSICS 72 Summer 2012-2013 Second Long Problem Set INSTRUCTIONS: Choose the best answer and shade the corresponding circle on your answer sheet. To change
More informationInduction_P1. 1. [1 mark]
Induction_P1 1. [1 mark] Two identical circular coils are placed one below the other so that their planes are both horizontal. The top coil is connected to a cell and a switch. The switch is closed and
More informationDEHRADUN PUBLIC SCHOOL I TERM ASSIGNMENT SUBJECT- PHYSICS (042) CLASS -XII
Chapter 1(Electric charges & Fields) DEHRADUN PUBLIC SCHOOL I TERM ASSIGNMENT 2016-17 SUBJECT- PHYSICS (042) CLASS -XII 1. Why do the electric field lines never cross each other? [2014] 2. If the total
More informationIII.Sources of Magnetic Fields - Ampere s Law - solenoids
Magnetism I. Magnetic Field - units, poles - effect on charge II. Magnetic Force on Current - parallel currents, motors III.Sources of Magnetic Fields - Ampere s Law - solenoids IV.Magnetic Induction -
More informationr where the electric constant
0. Coulomb s law a) Explain the concepts of electrons, protons, charged objects, charged up, gaining charge, losing charge, grounding and charge conservation. b) Describe the motion of point charges when
More informationVersion The diagram below represents lines of magnetic flux within a region of space.
1. The diagram below represents lines of magnetic flux within a region of space. 5. The diagram below shows an electromagnet made from a nail, a coil of insulated wire, and a battery. The magnetic field
More informationYell if you have any questions
Class 36: Outline Hour 1: Concept Review / Overview PRS Questions Possible Exam Questions Hour : Sample Exam Yell if you have any questions P36-1 Before Starting All of your grades should now be posted
More informationPHYS 1444 Section 02 Review #2
PHYS 1444 Section 02 Review #2 November 9, 2011 Ian Howley 1 1444 Test 2 Eq. Sheet Terminal voltage Resistors in series Resistors in parallel Magnetic field from long straight wire Ampére s Law Force on
More informationPS I AP Physics 2 Electromagnetic Induction Multiple Choice Questions
PS I AP Physics 2 Electromagnetic Induction Multiple Choice Questions 1. A beam of electrons travels between two parallel coils of wire, as shown in the figures above. When the coils do not carry a current,
More informationAP Physics C: Electricity and Magnetism
18 AP Physics C: Electricity and Magnetism Scoring Guidelines College Board, Advanced Placement Program, AP, AP Central, and the acorn logo are registered trademarks of the College Board. AP Central is
More informationChapter 23: Magnetic Flux and Faraday s Law of Induction
Chapter 3: Magnetic Flux and Faraday s Law of Induction Answers Conceptual Questions 6. Nothing. In this case, the break prevents a current from circulating around the ring. This, in turn, prevents the
More information(D) Blv/R Counterclockwise
1. There is a counterclockwise current I in a circular loop of wire situated in an external magnetic field directed out of the page as shown above. The effect of the forces that act on this current is
More informationr where the electric constant
1.0 ELECTROSTATICS At the end of this topic, students will be able to: 10 1.1 Coulomb s law a) Explain the concepts of electrons, protons, charged objects, charged up, gaining charge, losing charge, charging
More information