# Physics 2B Spring 2010: Final Version A 1 COMMENTS AND REMINDERS:

Size: px
Start display at page:

Transcription

1 Physics 2B Spring 2010: Final Version A 1 COMMENTS AND REMINDERS: Closed book. No work needs to be shown for multiple-choice questions. 1. A charge of +4.0 C is placed at the origin. A charge of 3.0 C is then placed at x = 1.0 m. A third charge of +6.0 C is then placed at x = 10.0 m. What is the magnitude of the force on a proton placed at x = 4.0 m? a) N. b) N. c) N. d) N. e) N. 2. A uniformly charged ring is 1.0 cm in radius. The electric field on the axis 2.0 cm from the center of the ring has magnitude of 2.2 MN/C and points toward the ring center. Find the ring charge a nc b nc c nc d nc e nc 3. A closed surface contains the following point charges: 6 C, 4 C, 2 C, 4 C. The electric flux coming out of the surface is: a. 1.8 "10 12 N#m 2 b. "1.8 #10 12 N\$m 2 c. 4.5 "10 11 N#m 2 d. "4.5 #10 11 N\$m 2 e. 1.1"10 12 N#m 2

2 Physics 2B Spring 2010: Final Version A 2 4. Charges of C each are located at three of the corners of a square that is 1.0 m on each side. A charge of C is located at the other corner. What is the electric potential (i.e. voltage) at the center of the square due to these charges? d = 1 m a V. b V. c V. d V. e V. 5. A capacitor consists of conducting sphere of radius R 1 surrounded by a concentric conducting shell of radius R 2. What is its capacitance? a. ε ο R 12 / R 2 b. ε ο R 1.R 2 c. 4πε ο R 1.R 2 /(R 1 - R 2 ) d. 4πε ο R 12 /R 2 e. ε ο (R 1 - R 2 ) 6. A long, thin wire carries a uniform line charge density λ= -6.8 µc/m. It is surrounded by a thick concentric cylindrical shell of inner radius 2.5 cm and outer radius 3.5 cm. What uniform charge density in shell will result in zero electric field outside of the shell? a. 3.6 mc/m 3 b. 1.8 mc/m 3 c. 5.4 mc/m 3 d. 2.7 mc/m 3 e. 0.9 mc/m 3 7. A certain capacitor, in series with a 720 Ω resistor, is being charged by a DC battery. At the end of 10 ms its charge is half the final value. The capacitance is about: a. 9.6 µf. b. 14 µf. c. 20 µf. d. 7.2 µf. e. 10 µf.

3 Physics 2B Spring 2010: Final Version A 3 8. How much power is being dissipated by the 12-Ω resistor? 16 V 4.0! a. 4.0 W b. 3.0 W c. 18 W d. 12 W e. 27 W b 18 V 8.0! 12! a 9. A metal bar has a rectangular cross section (5 cm in the x direction and 10 cm in the y direction). The current density J is uniform in the x direction but changes linearly in the y direction, going from J=0 when y=0 to J= 0.1 A/cm 2 when y=10 cm. What is the total current across the bar? a. 5.0 A. b. 1 A. c. 0.5 A. d. 2.5 A. e A. 10. What is the equivalent resistance for these resistors between points a and b? a. 7.0 Ω. b. 5.0 Ω. c. 11 Ω. d. 3.5 Ω. e. 2.5 Ω. 11. Two capacitors with capacitances of 1.5 µf and 0.25 µf, respectively, are connected in parallel. The system is connected to a 50-V battery. What electrical potential energy is stored in the 1.5-µF capacitor? a J b J c J d J e J

4 Physics 2B Spring 2010: Final Version A What is the equivalent capacitance between points a and b in the diagram to the right? a μf. b μf. c. 1.1 μf. d. 4.5 μf. e. 6.0 μf. 13. If a battery of 12 V is connected to this circuit of capacitors, what is the voltage on the 24 µf capacitor? a. 4 V. b. 6 V. c. 8 V. d. 3 V. e. 2 V. 20!F 12!F 24!F 12!F 14. A length of wire is formed into a closed circuit with radii a= 0.5 m and b= 1 m, as shown in the figure, and carries a current I= 10A. What is the magnitude of the magnetic field B at point P? a. 4π µt. b. π µt. c. 2π µt. d. 3π µt. e. 2 µt.

5 Physics 2B Spring 2010: Final Version A A 500 turn solenoid has a radius of 5.00 cm and a length of 20.0 cm. What is the energy stored in the solenoid when the current in its windings is 1.50 A? a mj. b mj. c mj. d mj. e mj. solenoid 16. A proton moving at a speed of m/s cuts across the lines of a magnetic field at an angle of 70. The magnitude of the magnetic field is T. What is the magnitude of the force acting on the proton? a N. b N. c N. d N. e N. 17. Three parallel wires all with the same magnitude of current (I 1 = I 2 = I 3= 10 A) are perpendicular to the plane of this page. In two of the wires, the current is directed out of the page, while in the remaining wire the current is directed into the page. What is the force per unit of length acting on wire 1? a mn/m to the right. b mn/m to the right. c. 0.5 mn/m to the left. d mn/m to the left. e mn/m to the left. 18. Two long straight wires are parallel and carry current in the opposite direction. The currents are 8.0 A and 12 A and the wires are separated by 0.40 cm. The magnitude of magnetic field at a point 0.6 cm to the right of the wire carrying the 12 A current is: a T. b T. c T. d T. e T.! 1! 2! 3 x = 4 cm 0 cm +4 cm

6 Physics 2B Spring 2010: Final Version A A square wire loop of side 0.5 m and resistance 5 Ω moves to the right with speed v = 0.25 m/s. At t=0 its rightmost edge enters a uniform magnetic field B = 1.0 T pointing into the page. Find the power dissipated by the resistor while the loop is moving into the magnetic field. a mw. b mw. c. 6.2 mw. d. 1.6 mw. e. 3.1 mw. 20. An AC voltage source, with a peak output of 200 V, is connected to a 50-Ω resistor. What is the rate of energy dissipated due to heat in the resistor? a. 200 W b. 400 W c. 566 W d. 800 W e W 21. A 10.0 mh inductor and a 2.5 Ω resistor are wired in series to a 9.0 V DC battery. A switch in the circuit is closed at time t = 0, at which time the current is zero. Find the voltage drop across the inductor after one time constant, τ L, has elapsed. a. ΔV inductor = 3.3 Volts. b. ΔV inductor = 2.3 Volts. c. ΔV inductor = 9.0 Volts. d. ΔV inductor = 5.7 Volts. e. ΔV inductor = 4.0 Volts. 22. In an RLC series circuit, the resistor has a resistance of 50 Ω, the inductor has an inductance of 0.20 H, and the capacitor has a capacitance of 150 µf. The AC source has an rms Voltage of 240 V along with a frequency of 50 Hz. What is the resonant frequency and impedance of the circuit? a. 183 Hz and 21 Ω. b. 183 Hz and 50 Ω. c. 29 Hz and 62 Ω. d. 29 Hz and 65 Ω. e. 29 Hz and 134 Ω.

7 Physics 2B Spring 2010: Final Version A 7 Recall that F = k e q 1 q 2 r 2 ; k e = 8.99"10 9 N " m 2 C 2 ; e = 1.60"10 #19 C; ε ο = 8.85!10 "12 C 2 N " m 2 ; m e = 9.11"10 #31 kg; m p = 1.673"10 #27 kg; m n = 1.675"10 #27 kg; 1 ev =1.602 "10 #19 J; 1 kwh = 3.60 "10 6 J; r r q F = q o E ; E = k e r ; " 2 E = EAcos# ; " E = Q inside qq ; PE elec,point = k 0 e # 0 r ; q V point charge = k e r ; "PE elec = q 0 "V ; C = Q "V ; C = " A parllel plate 0 d ; C = "# A dielectric 0 d ; 1 C series eq = 1 C C C 3 +K; C parallel eq = C 1 + C 2 + C 3 +K; I = "Q "t ; R = "V I = # L A ; " = " 1+ # T \$ T o ( o) [ ]; R = R o [ 1+ "( T # T o )]; Power = I "V " Silver =1.59 #10 \$8 %& m ; " Copper =1.7 #10 \$8 %& m ( ( ) = I 2 R = "V ) 2 R ; I in = I out ; 1 R parallel eq = 1 R R R 3 +K; R series eq = R 1 + R 2 + R 3 +K; #"V loop = 0; " = RC ; q charge = Q final ( 1" e t / RC ); q discharge = Q 0 e t / RC ; db r = µ I o d r l # r ) r ; B " d r N # l = µ 4" r 2 o Icross ; µ ο = 4π 10-7 A ; 2

8 Physics 2B Spring 2010: Final Version A 8 r F on q = q r v " r B ; p = mv ; F cent = mv2 r I r F on I = IL r " B r ; " = BIAN sin# ; " = r F r sin# ; " = µbsin#; µ = NIA; r = mv qb ; ; B wire = µ I o 2"r ; B coil = N µ I o 2R ; B = µ solenoid o B F B! v ; left right ( N l)i ; F 1 l = µ I I o 1 2 2"d ; up down out of page into page. " B = BAcos# ; " = #N d\$ B dt L = N" B I ; L = µ on 2 A l ; " = B # lv; " = NAB# sin (#t); " = 2#f ; " L = #L di dt ; ; " L = L " R ; I = Rt / L ( 1# e ); PE L = 1 2 R LI 2. I rms = I max 2 ; "V = "V max rms 2 ; P = I 2 avg rmsr; X C = 1 2"fC ; "V = I X ; X C,rms rms C L = 2"fL ; "V L,rms = I rms X L ; "V max = "V 2 R + ("V L # "V C ) 2 ; Z = R 2 + ( X L " X C ) 2 ; "V max = I max Z; tan" = X L # X C R ; P avg = I rms "V rms cos# ; I rms = "V rms Z = "V rms R 2 + X L # X C 2" LC ( ) 2 ; f o = 1 A circle = "r 2 ; A sphere = 4"r 2 ; A square = L 2 ; g = 9.80 m/s 2 ; 100 cm =1 m; 1,000 ma = 1 A; 2.54 cm =1 in; 12 in =1 ft ; 5,280 ft =1 mi; 1,609 m =1 mi; m =1 ft ; A circle = "r 2 ; A cyl. side = 2"rh ; A sphere = 4"r 2 ; g = 9.80 m/s 2 ; x = "b ± b2 " 4ac ; 100 cm =1 m; 2a 1 µf =1.0 "10 #6 F; 1 MW =1.0 "10 6 W ; 1,000 W =1 kw ; 60 s = 1 min; 60 min =1 hr; 2.54 cm =1 in; 12 in =1 ft ; 5,280 ft =1 mi; 1,609 m =1 mi; m =1 ft

### Physics 1B Spring 2010: Final Version A 1 COMMENTS AND REMINDERS:

Physics 1B Spring 2010: Final Version A 1 COMMENTS AND REMINDERS: Closed book. No work needs to be shown for multiple-choice questions. 1. Four charges are at the corners of a square, with B and C on opposite

### PHYS 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

### Physics 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

### Physics 420 Fall 2004 Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers.

Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers. 1. A charge q 1 = +5.0 nc is located on the y-axis, 15 µm above the origin, while another charge q

### 2. Waves with higher frequencies travel faster than waves with lower frequencies (True/False)

PHY 2049C Final Exam. Summer 2015. Name: Remember, you know this stuff Answer each questions to the best of your ability. Show ALL of your work (even for multiple choice questions), you may receive partial

### a. 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

### Alternating Current Circuits

Alternating Current Circuits AC Circuit An AC circuit consists of a combination of circuit elements and an AC generator or source. The output of an AC generator is sinusoidal and varies with time according

### PHYSICS 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:

### ELECTRO 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

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A jeweler needs to electroplate gold (atomic mass 196.97 u) onto a bracelet. He knows

### Louisiana 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),

### PHYS General Physics for Engineering II FIRST MIDTERM

Çankaya University Department of Mathematics and Computer Sciences 2010-2011 Spring Semester PHYS 112 - General Physics for Engineering II FIRST MIDTERM 1) Two fixed particles of charges q 1 = 1.0µC and

---------------------------------------------------------------------------------------------------------- PHYS 2326 University Physics II Class number ---------------------------------------------------------------------------------------------------------------------

### General 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

### A) 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

### Exam 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

### Phys 2025, First Test. September 20, minutes Name:

Phys 05, First Test. September 0, 011 50 minutes Name: Show all work for maximum credit. Each problem is worth 10 points. Work 10 of the 11 problems. k = 9.0 x 10 9 N m / C ε 0 = 8.85 x 10-1 C / N m e

### SUMMARY 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,

### ELECTROMAGNETIC OSCILLATIONS AND ALTERNATING CURRENT

Chapter 31: ELECTROMAGNETIC OSCILLATIONS AND ALTERNATING CURRENT 1 A charged capacitor and an inductor are connected in series At time t = 0 the current is zero, but the capacitor is charged If T is the

### 1) Opposite charges and like charges. a) attract, repel b) repel, attract c) attract, attract

) Opposite charges and like charges. a) attract, repel b) repel, attract c) attract, attract ) The electric field surrounding two equal positive charges separated by a distance of 0 cm is zero ; the electric

### A) 4 B) 3 C) 2 D) 5 E) 6

Coordinator: Saleem Rao Monday, January 01, 2018 Page: 1 Q1. A standing wave having three nodes is set up in a string fixed at both ends. If the frequency of the wave is doubled, how many antinodes will

### CHAPTER 22 ELECTROMAGNETIC INDUCTION

CHAPTER 22 ELECTROMAGNETIC INDUCTION PROBLEMS 47. REASONING AND Using Equation 22.7, we find emf 2 M I or M ( emf 2 ) t ( 0.2 V) ( 0.4 s) t I (.6 A) ( 3.4 A) 9.3 0 3 H 49. SSM REASONING AND From the results

### Physics 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

### 2) As two electric charges are moved farther apart, the magnitude of the force between them.

) Field lines point away from charge and toward charge. a) positive, negative b) negative, positive c) smaller, larger ) As two electric charges are moved farther apart, the magnitude of the force between

### Solutions 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

### 1 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

### Louisiana State University Physics 2102, Exam 2, March 5th, 2009.

PRINT Your Name: Instructor: Louisiana State University Physics 2102, Exam 2, March 5th, 2009. Please be sure to PRINT your name and class instructor above. The test consists of 4 questions (multiple choice),

### Physics 2020 Exam 2 Constants and Formulae

Physics 2020 Exam 2 Constants and Formulae Useful Constants k e = 8.99 10 9 N m 2 /C 2 c = 3.00 10 8 m/s ɛ = 8.85 10 12 C 2 /(N m 2 ) µ = 4π 10 7 T m/a e = 1.602 10 19 C h = 6.626 10 34 J s m p = 1.67

### /20 /20 /20 /60. Dr. Galeazzi PHY207 Test #3 November 20, I.D. number:

Signature: Name: I.D. number: You must do ALL the problems Each problem is worth 0 points for a total of 60 points. TO GET CREDIT IN PROBLEMS AND 3 YOU MUST SHOW GOOD WORK. CHECK DISCUSSION SECTION ATTENDED:

### b) (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

### Exam 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

### Phys222 W16 Exam 2: Chapters Key. Name:

Name: Please mark your answer here and in the scantron. A positively charged particle is moving in the +y-direction when it enters a region with a uniform electric field pointing in the +y-direction. Which

### PHY 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

### f 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.

### Gen. 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

### Exam 2 Solutions. PHY2054 Spring Prof. Paul Avery Prof. Pradeep Kumar Mar. 18, 2014

Exam 2 Solutions Prof. Paul Avery Prof. Pradeep Kumar Mar. 18, 2014 1. A series circuit consists of an open switch, a 6.0 Ω resistor, an uncharged 4.0 µf capacitor and a battery with emf 15.0 V and internal

### P114 University of Rochester NAME S. Manly Spring 2010

Exam 2 (March 23, 2010) Please read the problems carefully and answer them in the space provided. Write on the back of the page, if necessary. Show your work where indicated. Problem 1 ( 8 pts): In each

### P202 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)

### Physics 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

### 5) Ohm s Law gives the relationship between potential difference and current for a.

) During any process, the net charge of a closed system. a) increases b) decreases c) stays constant ) In equilibrium, the electric field in a conductor is. a) always changing b) a constant non-zero value

### Final on December Physics 106 R. Schad. 3e 4e 5c 6d 7c 8d 9b 10e 11d 12e 13d 14d 15b 16d 17b 18b 19c 20a

Final on December11. 2007 - Physics 106 R. Schad YOUR NAME STUDENT NUMBER 3e 4e 5c 6d 7c 8d 9b 10e 11d 12e 13d 14d 15b 16d 17b 18b 19c 20a 1. 2. 3. 4. This is to identify the exam version you have IMPORTANT

### Inductance, RL and RLC Circuits

Inductance, RL and RLC Circuits Inductance Temporarily storage of energy by the magnetic field When the switch is closed, the current does not immediately reach its maximum value. Faraday s law of electromagnetic

### NAME: PHYSICS 6B SPRING 2011 FINAL EXAM ( VERSION A )

NAME: PHYSCS 6B SPRNG 2011 FNAL EXAM ( VERSON A ) Choose the best answer for each of the following multiple-choice questions. There is only one answer for each. Questions 1-2 are based on the following

### Handout 10: Inductance. Self-Inductance and inductors

1 Handout 10: Inductance Self-Inductance and inductors In Fig. 1, electric current is present in an isolate circuit, setting up magnetic field that causes a magnetic flux through the circuit itself. This

### Q1. 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

### Capacitance, Resistance, DC Circuits

This test covers capacitance, electrical current, resistance, emf, electrical power, Ohm s Law, Kirchhoff s Rules, and RC Circuits, with some problems requiring a knowledge of basic calculus. Part I. Multiple

### (a) zero. B 2 l 2. (c) (b)

1. Two identical co-axial circular loops carry equal currents circulating in the same direction: (a) The current in each coil decrease as the coils approach each other. (b) The current in each coil increase

### Electromagnetic Oscillations and Alternating Current. 1. Electromagnetic oscillations and LC circuit 2. Alternating Current 3.

Electromagnetic Oscillations and Alternating Current 1. Electromagnetic oscillations and LC circuit 2. Alternating Current 3. RLC circuit in AC 1 RL and RC circuits RL RC Charging Discharging I = emf R

### Electromagnetic 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

### AC Circuits Homework Set

Problem 1. In an oscillating LC circuit in which C=4.0 μf, the maximum potential difference across the capacitor during the oscillations is 1.50 V and the maximum current through the inductor is 50.0 ma.

### Ch. 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

### Physics 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

### Physics 196 Final Test Point

Physics 196 Final Test - 120 Point Name You need to complete six 5-point problems and six 10-point problems. Cross off one 5-point problem and one 10-point problem. 1. Two small silver spheres, each with

### Chapter 30 INDUCTANCE. Copyright 2012 Pearson Education Inc.

Chapter 30 INDUCTANCE Goals for Chapter 30 To learn how current in one coil can induce an emf in another unconnected coil To relate the induced emf to the rate of change of the current To calculate the

### PHYS 241 EXAM #1 October 5, 2006

1. ( 5 points) Two point particles, one with charge 8 10 9 C and the other with charge 2 10 9 C, are separated by 4 m. The magnitude of the electric field (in N/C) midway between them is: A. 9 10 9 B.

### Exam 2 Solutions. Answer: 3.0 W Solution: The total current is in the series circuit is 1 A, so the power dissipated in R 2 is i 2 R 2

Exam 2 Solutions Prof. Pradeep Kumar Prof. Paul Avery Mar. 21, 2012 1. A portable CD player does not have a power rating listed, but it has a label stating that it draws a maximum current of 159.0 ma.

### Physics 102 Spring 2006: Final Exam Multiple-Choice Questions

Last Name: First Name: Physics 102 Spring 2006: Final Exam Multiple-Choice Questions For questions 1 and 2, refer to the graph below, depicting the potential on the x-axis as a function of x V x 60 40

### Physics 6B Summer 2007 Final

Physics 6B Summer 2007 Final Question 1 An electron passes through two rectangular regions that contain uniform magnetic fields, B 1 and B 2. The field B 1 is stronger than the field B 2. Each field fills

### Inductance, Inductors, RL Circuits & RC Circuits, LC, and RLC Circuits

Inductance, Inductors, RL Circuits & RC Circuits, LC, and RLC Circuits Self-inductance A time-varying current in a circuit produces an induced emf opposing the emf that initially set up the timevarying

### Induction_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

### Q1. Ans: (1.725) =5.0 = Q2.

Coordinator: Dr. A. Naqvi Wednesday, January 11, 2017 Page: 1 Q1. Two strings, string 1 with a linear mass density of 1.75 g/m and string 2 with a linear mass density of 3.34 g/m are tied together, as

### 18 - 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 (

### Chapter 32. Inductance

Chapter 32 Inductance Joseph Henry 1797 1878 American physicist First director of the Smithsonian Improved design of electromagnet Constructed one of the first motors Discovered self-inductance Unit of

### Phys102 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)

### AP Physics C. Electric Circuits III.C

AP Physics C Electric Circuits III.C III.C.1 Current, Resistance and Power The direction of conventional current Suppose the cross-sectional area of the conductor changes. If a conductor has no current,

### Alternating Current Circuits. Home Work Solutions

Chapter 21 Alternating Current Circuits. Home Work s 21.1 Problem 21.11 What is the time constant of the circuit in Figure (21.19). 10 Ω 10 Ω 5.0 Ω 2.0µF 2.0µF 2.0µF 3.0µF Figure 21.19: Given: The circuit

### TIME OF COMPLETION NAME SOLUTION DEPARTMENT OF NATURAL SCIENCES. PHYS 1112, Exam 3 Section 1 Version 1 April 23, 2013 Total Weight: 100 points

TIME OF COMPLETION NAME SOLUTION DEPARTMENT OF NATURAL SCIENCES PHYS, Exam 3 Section Version April 3, 03 Total Weight: 00 points. Check your examination for completeness prior to starting. There are a

### Practice Exam 1. Necessary Constants and Equations: Electric force (Coulomb s Law): Electric field due to a point charge:

Practice Exam 1 Necessary Constants and Equations: Electric force (Coulomb s Law): Electric field due to a point charge: Electric potential due to a point charge: Electric potential energy: Capacitor energy:

### 9. M = 2 π R µ 0 n. 3. M = π R 2 µ 0 n N correct. 5. M = π R 2 µ 0 n. 8. M = π r 2 µ 0 n N

This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 00 0.0 points A coil has an inductance of 4.5 mh, and the current

### University of California, Berkeley Physics H7B Spring 1999 (Strovink) SOLUTION TO PROBLEM SET 11 Solutions by P. Pebler

University of California Berkeley Physics H7B Spring 999 (Strovink) SOLUTION TO PROBLEM SET Solutions by P. Pebler Purcell 7.2 A solenoid of radius a and length b is located inside a longer solenoid of

### Name: Class: Date: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

Name: Class: _ Date: _ w9final Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. If C = 36 µf, determine the equivalent capacitance for the

### Induction 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:

### PRACTICE EXAM 1 for Midterm 2

PRACTICE EXAM 1 for Midterm 2 Multiple Choice Questions 1) The figure shows three identical lightbulbs connected to a battery having a constant voltage across its terminals. What happens to the brightness

### Self-inductance A time-varying current in a circuit produces an induced emf opposing the emf that initially set up the time-varying current.

Inductance Self-inductance A time-varying current in a circuit produces an induced emf opposing the emf that initially set up the time-varying current. Basis of the electrical circuit element called an

### On my honor, I have neither given nor received unauthorized aid on this examination.

Instructor: Profs. Andrew Rinzler, Paul Avery, Selman Hershfield PHYSICS DEPARTMENT PHY 049 Exam 3 April 7, 00 Name (print, last first): Signature: On my honor, I have neither given nor received unauthorized

### Assessment Schedule 2015 Physics: Demonstrate understanding of electrical systems (91526)

NCEA Level 3 Physics (91526) 2015 page 1 of 6 Assessment Schedule 2015 Physics: Demonstrate understanding of electrical systems (91526) Evidence Q Evidence Achievement Achievement with Merit Achievement

### Two 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

### Part 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

### Electrical polarization. Figure 19-5 [1]

Electrical polarization Figure 19-5 [1] Properties of Charge Two types: positive and negative Like charges repel, opposite charges attract Charge is conserved Fundamental particles with charge: electron

### Figure 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

### Physics 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

### The 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.

### Yell 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

### University 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

### Louisiana 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

### PHYS 272 (Spring 2018): Introductory Physics: Fields Problem-solving sessions

Figure 1: Problem 1 Figure 2: Problem 2 PHYS 272 (Spring 2018): Introductory Physics: Fields Problem-solving sessions (1). A thin rod of length l carries a total charge Q distributed uniformly along its

### 2 Coulomb s Law and Electric Field 23.13, 23.17, 23.23, 23.25, 23.26, 23.27, 23.62, 23.77, 23.78

College of Engineering and Technology Department of Basic and Applied Sciences PHYSICS I Sheet Suggested Problems 1 Vectors 2 Coulomb s Law and Electric Field 23.13, 23.17, 23.23, 23.25, 23.26, 23.27,

### Physics 227 Final Exam Wednesday, May 9, Code: 000

Physics 227 Final Exam Wednesday, May 9, 2018 Physics 227, Section RUID: Code: 000 Your name with exam code Your signature Turn off and put away LL electronic devices NOW. NO cell phones, NO smart watches,

### Mansfield 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

### Physics 1308 Exam 2 Summer 2015

Physics 1308 Exam 2 Summer 2015 E2-01 2. The direction of the magnetic field in a certain region of space is determined by firing a test charge into the region with its velocity in various directions in

### Phys102 Final-132 Zero Version Coordinator: A.A.Naqvi Wednesday, May 21, 2014 Page: 1

Coordinator: A.A.Naqvi 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? A).3 V

### Chapter 32. Inductance

Chapter 32 Inductance Inductance Self-inductance A time-varying current in a circuit produces an induced emf opposing the emf that initially set up the time-varying current. Basis of the electrical circuit

### Do not fill out the information below until instructed to do so! Name: Signature: Section Number:

Do not fill out the information below until instructed to do so! Name: Signature: E-mail: Section Number: No calculators are allowed in the test. Be sure to put a box around your final answers and clearly

### ELECTROMAGNETIC INDUCTION AND FARADAY S LAW

ELECTROMAGNETIC INDUCTION AND FARADAY S LAW Magnetic Flux The emf is actually induced by a change in the quantity called the magnetic flux rather than simply py by a change in the magnetic field Magnetic

### Physics 202 Midterm Exam 2 Nov 2, 2011

Physics 202 Midterm Exam 2 Nov 2, 2011 Name: Student ID: Section: TA (please circle): Daniel Crow Scott Douglas Yutao Gong Taylor Klaus Aaron Levine Andrew Loveridge Jason Milhone Hojin Yoo Instructions:

### Physics 106, Section 1

Physics 106, Section 1 Magleby Exam 2, Summer 2012 Exam Cid You are allowed a pencil and a testing center calculator. No scratch paper is allowed. Testing center calculators only. 1. A circular coil lays