NAME. and 2I o. (1) Two long wires carry magnetic fields I o. , where I o

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "NAME. and 2I o. (1) Two long wires carry magnetic fields I o. , where I o"

Transcription

1 (1) Two long wires carry magnetic fields I o and 2I o, where I o is a constant. The two wires cross at the origin (but without making any electrical connection), and lie in the x-y plane. (a) Find the B field at a point, z = h, above the two wires at a point directly above the point where they cross. What is the direction? (b) For the picture above, in what direction should a magnetic field be applied in order to exert a force pointing to the right, on the vertical wire? (i) To the right (v) Into the page (ii) To the left (vi) Out of the page (iii) Upwards (towards top of page) (iv) Downwards (towards bottom of page) (2) For the illustrated circuit, (a) Find the steady-state current in resistor R. (b) Find the steady-state voltage drop across the 2R resistor. 2

2 (3) An emf can be produced in a loop of wire in a uniform magnetic field if (choose the one best answer): a) The field changes in magnitude g) All except b) b) The loop moves horizontally in the field. h) All except c) c) The loop rotates in the field i) All except d). d) The loop is removed from the field region. e) The size of the loop changes. f) All of the above. (4). An object is positioned relative to a converging lens as shown below. The resulting image will be: (Choose the correct answer.) (i) real and inverted (iv) virtual and non-inverted (ii) real and non-inverted (v) none of the above (iii) virtual and inverted (5) A capacitor has wide, flat plates, and plate separation equal to 0.30 mm. (a) The electric field between plates is equal to 550,000 N/C. What is the voltage difference between the plates? plates? (b) The energy stored in this capacitor is equal to 4.5 mj. What is the area of each the 3

3 (6) A solid sphere is constructed of nonconducting plastic, with radius R. This sphere carries a total charge of Q, distributed uniformly throughout the sphere. (a) What is the charge density on the sphere? (b) Find the electric field at points where r < R, showing your work to obtain credit. (7) A light ray passes from water into air. (The water surface is horizontal, while the dotted line shows the vertical direction.) Of the diagrams, which most clearly resembles the light ray s path? (choose one) (8) A point charge of 2.6 µc is centered at the origin, and completely surrounded by an insulating cube. The point charge is at the center of the cube. Find the flux through one face of the cube. 4

4 (9) Point charges +Q, Q, +2Q and 2Q are arranged at the points of a square as shown. The charges are at ±d on the x axis and ±d on the y axis. (a) Find the electric potential at the point P, relative to infinity. Point P is at position (d, d). (You must show your methods to obtain full credit on this problem.) (b) Find the electric field at the origin. (c) The charge at the top (the one on the positive y-axis) is moved from its illustrated position to the origin. What is the change in total potential energy, if Q = 12 µc, and d = 2.5 cm (values for part c only)? 5

5 (10) The square conducting loop shown has dimensions h by h, and is moving with velocity v to the right. It is about to enter a region of uniform B field, which is indicated by the dotted rectangle. Outside the dotted region, B = 0; inside, the magnitude is B o. (a) If the loop starts to enter the field region at t = 0, find an expression for the magnetic flux vs. time through the loop. (Do this only for times when the loop is partly in the field.) (b) Using your result from (a), find the total emf in the loop during this time. Does it go clockwise or counterclockwise (give a brief explanation)? (c) Determine the current in the loop during this time, if v = 20.0 m/s, h = 3.5 cm, B o = 5.0 T, and the 1-turn loop has resistance R = 22 Ω. (d) Describe what happens to the emf during times: (i) when the loop is completely inside the field region; (ii) when it is emerging from the other side. 6

6 (11) A resistor circuit is connected as shown. (a) what is the effective resistance of the four resistors, seen from the battery? (b) Note the two points A and B. If point B is at a potential of 3.0 V, what is the potential at A? (12) Protons of velocity 5x10 6 m/s are moving perpendicular to crossed magnetic and electric fields. (Velocity is perpendicular to both fields.) The protons pass through the region of crossed fields undeflected. If the electric field strength is 15,000 V/m, what is the strength of the magnetic field? 7

7 (13) In this circuit, V B = 15.0 V, C = 15 µf, and R = 30 kω. (Hence, 5R = 150 kω.) The capacitor is uncharged at the start. (a) If the switch is closed at t = 0, at what time will the capacitor voltage drop be 5.0 V? (b) At a later time, if the switch is opened, describe briefly what happens. 8

1. If each of the four resistors below has a resistance of 1 µω, what is the equivalent resistance of the combination?

1. If each of the four resistors below has a resistance of 1 µω, what is the equivalent resistance of the combination? 1. If each of the four resistors below has a resistance of 1 µω, what is the equivalent resistance of the combination? V (a) 0.25 µω (b) 1 µω (c) 2 µω (d) 4 µω (e) none of these 2. Three identical lamps

More information

(b) Draw the direction of for the (b) Draw the the direction of for the

(b) Draw the direction of for the (b) Draw the the direction of for the 2. An electric dipole consists of 2A. A magnetic dipole consists of a positive charge +Q at one end of a bar magnet with a north pole at one an insulating rod of length d and a end and a south pole at

More information

Physics 1653 Exam 3 - Review Questions

Physics 1653 Exam 3 - Review Questions Physics 1653 Exam 3 - Review Questions 3.0 Two uncharged conducting spheres, A and B, are suspended from insulating threads so that they touch each other. While a negatively charged rod is held near, but

More information

Physics 122 (Sonnenfeld), Spring 2013 ( MPSONNENFELDS2013 ) My Courses Course Settings

Physics 122 (Sonnenfeld), Spring 2013 ( MPSONNENFELDS2013 ) My Courses Course Settings Signed in as Richard Sonnenfeld, Instructor Help Sign Out Physics 122 (Sonnenfeld), Spring 2013 ( MPSONNENFELDS2013 ) My Courses Course Settings Course Home Assignments Roster Gradebook Item Library Essential

More information

Einstein Classes, Unit No. 102, 103, Vardhman Ring Road Plaza, Vikas Puri Extn., Outer Ring Road, New Delhi , Ph. : ,

Einstein Classes, Unit No. 102, 103, Vardhman Ring Road Plaza, Vikas Puri Extn., Outer Ring Road, New Delhi , Ph. : , 1 E L E C T R O S TAT I C S 1. Define lines of forces and write down its properties. Draw the lines of force to represent (i) uniform electric field (ii) positive charge (iii) negative charge (iv) two

More information

Physics 202 Spring 2010 Practice Questions for Chapters 21-24

Physics 202 Spring 2010 Practice Questions for Chapters 21-24 Note: Answer key is at end. Physics 202 Spring 2010 Practice Questions for Chapters 21-24 1. A uniformly positively charged spherical conductor is placed midway between two identical uncharged conducting

More information

Phys222 Winter 2012 Quiz 4 Chapters 29-31. Name

Phys222 Winter 2012 Quiz 4 Chapters 29-31. Name Name If you think that no correct answer is provided, give your answer, state your reasoning briefly; append additional sheet of paper if necessary. 1. A particle (q = 5.0 nc, m = 3.0 µg) moves in a region

More information

MASSACHUSETTS INSTINUTE OF TECHNOLOGY ESG Physics. Problem Set 9 Solution

MASSACHUSETTS INSTINUTE OF TECHNOLOGY ESG Physics. Problem Set 9 Solution MASSACHUSETTS INSTINUTE OF TECHNOLOGY ESG Physics 8. with Kai Spring 3 Problem 1: 3-7 and 8 Problem Set 9 Solution A conductor consists of a circular loop of radius R =.1 m and two straight, long sections,

More information

Phys 102 Spg Exam No. 2 Solutions

Phys 102 Spg Exam No. 2 Solutions Phys 102 Spg. 2008 Exam No. 2 Solutions I. (20 pts) A 10-turn wire loop measuring 8.0 cm by 16.0 cm carrying a current of 2.0 A lies in the horizontal plane and is free to rotate about a horizontal axis

More information

2. In Newton s universal law of gravitation the masses are assumed to be. B. masses of planets. D. spherical masses.

2. In Newton s universal law of gravitation the masses are assumed to be. B. masses of planets. D. spherical masses. Practice Test: 41 marks (55 minutes) Additional Problem: 19 marks (7 minutes) 1. A spherical planet of uniform density has three times the mass of the Earth and twice the average radius. The magnitude

More information

Physics 2220 Module 09 Homework

Physics 2220 Module 09 Homework Physics 2220 Module 09 Homework 01. A potential difference of 0.050 V is developed across the 10-cm-long wire of the figure as it moves though a magnetic field perpendicular to the page. What are the strength

More information

1 of 7 10/1/2012 3:17 PM

1 of 7 10/1/2012 3:17 PM Assignment Previewer http://www.webassign.net/v4cgijfederici@njit/control.pl 1 of 7 10/1/2012 3:17 PM HW11Faraday (2861550) Question 1 2 3 4 5 6 7 8 9 10 1. Question Details SerPSE8 31.P.011.WI. [1742725]

More information

Q28.1 A positive point charge is moving to the right. The magnetic field that the point charge produces at point P (see diagram below) P

Q28.1 A positive point charge is moving to the right. The magnetic field that the point charge produces at point P (see diagram below) P Q28.1 A positive point charge is moving to the right. The magnetic field that the point charge produces at point P (see diagram below) P r + v r A. points in the same direction as v. B. points from point

More information

Induction. d. is biggest when the motor turns fastest.

Induction. d. is biggest when the motor turns fastest. Induction 1. A uniform 4.5-T magnetic field passes perpendicularly through the plane of a wire loop 0.10 m 2 in area. What flux passes through the loop? a. 5.0 T m 2 c. 0.25 T m 2 b. 0.45 T m 2 d. 0.135

More information

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

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If the voltage at a point in space is zero, then the electric field must be A) zero. B) positive.

More information

Physics 126 Practice Exam #3 Professor Siegel

Physics 126 Practice Exam #3 Professor Siegel Physics 126 Practice Exam #3 Professor Siegel Name: Lab Day: 1. Which one of the following statements concerning the magnetic force on a charged particle in a magnetic field is true? A) The magnetic force

More information

Exam 2 Solutions. PHY2054 Spring Prof. P. Kumar Prof. P. Avery March 5, 2008

Exam 2 Solutions. PHY2054 Spring Prof. P. Kumar Prof. P. Avery March 5, 2008 Prof. P. Kumar Prof. P. Avery March 5, 008 Exam Solutions 1. Two cylindrical resistors are made of the same material and have the same resistance. The resistors, R 1 and R, have different radii, r 1 and

More information

104 Practice Exam 2-3/21/02

104 Practice Exam 2-3/21/02 104 Practice Exam 2-3/21/02 1. Two electrons are located in a region of space where the magnetic field is zero. Electron A is at rest; and electron B is moving westward with a constant velocity. A non-zero

More information

Chapter 17 Electric Potential

Chapter 17 Electric Potential Chapter 17 Electric Potential 1. Doubling both charges changes the potential energy for a pair of point charges by a factor of: A. 2. B. 4. C. ½. D. ¼. E. 1 (no change). 4. What is the distance between

More information

Chapter 18 Electric Current and Circuits

Chapter 18 Electric Current and Circuits Chapter 18 Electric Current and Circuits 3. When a current flows down a wire: A. electrons are moving in the direction of the current. B. electrons are moving opposite the direction of the current. C.

More information

PH202-5D Final Comprehensive Exam (August 10, 2007)

PH202-5D Final Comprehensive Exam (August 10, 2007) NAME SCORE PH202-5D Final Comprehensive Exam (August 0, 2007) You may not open the textbook nor notebook. A letter size information may be used. A calculator may be used. However, mathematics or physics

More information

1. Units of a magnetic field might be: A. C m/s B. C s/m C. C/kg D. kg/c s E. N/C m ans: D

1. Units of a magnetic field might be: A. C m/s B. C s/m C. C/kg D. kg/c s E. N/C m ans: D Chapter 28: MAGNETIC FIELDS 1 Units of a magnetic field might be: A C m/s B C s/m C C/kg D kg/c s E N/C m 2 In the formula F = q v B: A F must be perpendicular to v but not necessarily to B B F must be

More information

Lesson 12: Magnetic Forces and Circular Motion!

Lesson 12: Magnetic Forces and Circular Motion! Lesson 12: Magnetic Forces and Circular Motion If a magnet is placed in a magnetic field, it will experience a force. Types of magnets: Direction of the force on a permanent magnet: Direction of the force

More information

Physics 25 Exam 3 November 3, 2009

Physics 25 Exam 3 November 3, 2009 1. A long, straight wire carries a current I. If the magnetic field at a distance d from the wire has magnitude B, what would be the the magnitude of the magnetic field at a distance d/3 from the wire,

More information

4/16/ Bertrand

4/16/ Bertrand Physics B AP Review: Electricity and Magnetism Name: Charge (Q or q, unit: Coulomb) Comes in + and The proton has a charge of e. The electron has a charge of e. e = 1.602 10-19 Coulombs. Charge distribution

More information

Objectives for the standardized exam

Objectives for the standardized exam III. ELECTRICITY AND MAGNETISM A. Electrostatics 1. Charge and Coulomb s Law a) Students should understand the concept of electric charge, so they can: (1) Describe the types of charge and the attraction

More information

1. Two charges +Q and -3Q are placed in opposite corners of a square. The work required to move a test charge q from point A to point B is:

1. Two charges +Q and -3Q are placed in opposite corners of a square. The work required to move a test charge q from point A to point B is: Electric Potential & Capacitance Multiple Choice 1. Two charges +Q and -3Q are placed in opposite corners of a square. The work required to move a test charge q from point A to point B is: (A) dependent

More information

Review Questions PHYS 2426 Exam 2

Review Questions PHYS 2426 Exam 2 Review Questions PHYS 2426 Exam 2 1. If 4.7 x 10 16 electrons pass a particular point in a wire every second, what is the current in the wire? A) 4.7 ma B) 7.5 A C) 2.9 A D) 7.5 ma E) 0.29 A Ans: D 2.

More information

Test - A2 Physics. Primary focus Magnetic Fields - Secondary focus electric fields (including circular motion and SHM elements)

Test - A2 Physics. Primary focus Magnetic Fields - Secondary focus electric fields (including circular motion and SHM elements) Test - A2 Physics Primary focus Magnetic Fields - Secondary focus electric fields (including circular motion and SHM elements) Time allocation 40 minutes These questions were ALL taken from the June 2010

More information

Physics 121 Sample Common Exam 3 NOTE: ANSWERS ARE ON PAGE 6. Instructions: 1. In the formula F = qvxb:

Physics 121 Sample Common Exam 3 NOTE: ANSWERS ARE ON PAGE 6. Instructions: 1. In the formula F = qvxb: Physics 121 Sample Common Exam 3 NOTE: ANSWERS ARE ON PAGE 6 Signature Name (Print): 4 Digit ID: Section: Instructions: Answer all questions 24 multiple choice questions. You may need to do some calculation.

More information

(Answers to odd-numbered Conceptual Questions can be found in the back of the book, beginning on page ANSxxx.)

(Answers to odd-numbered Conceptual Questions can be found in the back of the book, beginning on page ANSxxx.) [go to Problems] Walker, Physics, 3 rd Edition Chapter 23 Conceptual Questions (Answers to odd-numbered Conceptual Questions can be found in the back of the book, beginning on page ANSxxx.) 1. Explain

More information

** Can skip to Problems: 6, 7, 9, 15, 19, 28, 29, 35, 36, 39, 42 **

** Can skip to Problems: 6, 7, 9, 15, 19, 28, 29, 35, 36, 39, 42 ** Walker, Physics, 3 rd Edition Chapter 22 ** Can skip to Problems: 6, 7, 9, 15, 19, 28, 29, 35, 36, 39, 42 ** Conceptual Questions (Answers to odd-numbered Conceptual Questions can be found in the back

More information

1) Magnetic field lines come out of the south pole of a magnet and enter at the north pole.

1) Magnetic field lines come out of the south pole of a magnet and enter at the north pole. Exam Name 1) Magnetic field lines come out of the south pole of a magnet and enter at the north pole. 2) Which of the following statements is correct? A) Earth's north pole is magnetic north. B) The north

More information

13. In the circuit shown the amount of charge on the plates of capacitor is 5 V

13. In the circuit shown the amount of charge on the plates of capacitor is 5 V CAPACITORS 1. A parallel plate air capacitor consists of two circular plates of 2m 2 area separated by 1mm. If the gap between plates is doubled then its capacitance will be 1. Halved 2. Doubled 3. 4 times

More information

HMWK 3. Ch 23: P 17, 23, 26, 34, 52, 58, 59, 62, 64, 73 Ch 24: Q 17, 34; P 5, 17, 34, 42, 51, 52, 53, 57. Chapter 23

HMWK 3. Ch 23: P 17, 23, 26, 34, 52, 58, 59, 62, 64, 73 Ch 24: Q 17, 34; P 5, 17, 34, 42, 51, 52, 53, 57. Chapter 23 HMWK 3 Ch 23: P 7, 23, 26, 34, 52, 58, 59, 62, 64, 73 Ch 24: Q 7, 34; P 5, 7, 34, 42, 5, 52, 53, 57 Chapter 23 P23.7. Prepare: The connecting wires are ideal with zero resistance. We have to reduce the

More information

Exam 1 Solutions. PHY2054 Fall 2014. Prof. Paul Avery Prof. Andrey Korytov Sep. 26, 2014

Exam 1 Solutions. PHY2054 Fall 2014. Prof. Paul Avery Prof. Andrey Korytov Sep. 26, 2014 Exam 1 Solutions Prof. Paul Avery Prof. Andrey Korytov Sep. 26, 2014 1. Charges are arranged on an equilateral triangle of side 5 cm as shown in the diagram. Given that q 1 = 5 µc and q 2 = q 3 = 2 µc

More information

Physics 112 Homework 5 (solutions) (2004 Fall) Solutions to Homework Questions 5

Physics 112 Homework 5 (solutions) (2004 Fall) Solutions to Homework Questions 5 Solutions to Homework Questions 5 Chapt19, Problem-2: (a) Find the direction of the force on a proton (a positively charged particle) moving through the magnetic fields in Figure P19.2, as shown. (b) Repeat

More information

Chapter 19 Magnetic Forces and Fields

Chapter 19 Magnetic Forces and Fields Chapter 19 Magnetic Forces and Fields Student: 3. The magnetism of the Earth acts approximately as if it originates from a huge bar magnet within the Earth. Which of the following statements are true?

More information

Magnetic Fields; Sources of Magnetic Field

Magnetic Fields; Sources of Magnetic Field This test covers magnetic fields, magnetic forces on charged particles and current-carrying wires, the Hall effect, the Biot-Savart Law, Ampère s Law, and the magnetic fields of current-carrying loops

More information

Chapter 14: Magnets and Electromagnetism

Chapter 14: Magnets and Electromagnetism Chapter 14: Magnets and Electromagnetism 1. Electrons flow around a circular wire loop in a horizontal plane, in a direction that is clockwise when viewed from above. This causes a magnetic field. Inside

More information

Physics 102 Extra practice problems Fall The next two questions pertain to the following situation:

Physics 102 Extra practice problems Fall The next two questions pertain to the following situation: The next two questions pertain to the following situation: Three charges are placed located as shown in the figure to the right. The grid spacing is in meters.. y 10. 1. Calculate the x-component of the

More information

Faraday s Law; Inductance

Faraday s Law; Inductance This test covers Faraday s Law of induction, motional emf, Lenz s law, induced emf and electric fields, eddy currents, self-inductance, inductance, RL circuits, and energy in a magnetic field, with some

More information

Fall 12 PHY 122 Homework Solutions #8

Fall 12 PHY 122 Homework Solutions #8 Fall 12 PHY 122 Homework Solutions #8 Chapter 27 Problem 22 An electron moves with velocity v= (7.0i - 6.0j)10 4 m/s in a magnetic field B= (-0.80i + 0.60j)T. Determine the magnitude and direction of the

More information

1. The diagram below represents magnetic lines of force within a region of space.

1. The diagram below represents magnetic lines of force within a region of space. 1. The diagram below represents magnetic lines of force within a region of space. 4. In which diagram below is the magnetic flux density at point P greatest? (1) (3) (2) (4) The magnetic field is strongest

More information

Question Details C14: Magnetic Field Direction Abbott [ ]

Question Details C14: Magnetic Field Direction Abbott [ ] Phys 1114: Assignment 9 Abbott (5420633) Due: Mon Apr 7 2014 11:59 PM CDT Question 1 2 3 4 5 6 7 8 9 10 11 1. Question Details C14: Magnetic Field Direction Abbott [2861537] a) A wire is oriented horizontally

More information

Electrostatics Problems

Electrostatics Problems Name AP Physics B Electrostatics Problems Date Mrs. Kelly 1. How many excess electrons are contained in a charge of 30 C? 2. Calculate and compare the gravitational and electrostatic force between an electron

More information

Multiple Choice Questions for Physics 1 BA113 Chapter 23 Electric Fields

Multiple Choice Questions for Physics 1 BA113 Chapter 23 Electric Fields Multiple Choice Questions for Physics 1 BA113 Chapter 23 Electric Fields 63 When a positive charge q is placed in the field created by two other charges Q 1 and Q 2, each a distance r away from q, the

More information

AP2 Magnetism. (c) Explain why the magnetic field does no work on the particle as it moves in its circular path.

AP2 Magnetism. (c) Explain why the magnetic field does no work on the particle as it moves in its circular path. A charged particle is projected from point P with velocity v at a right angle to a uniform magnetic field directed out of the plane of the page as shown. The particle moves along a circle of radius R.

More information

( )( 10!12 ( 0.01) 2 2 = 624 ( ) Exam 1 Solutions. Phy 2049 Fall 2011

( )( 10!12 ( 0.01) 2 2 = 624 ( ) Exam 1 Solutions. Phy 2049 Fall 2011 Phy 49 Fall 11 Solutions 1. Three charges form an equilateral triangle of side length d = 1 cm. The top charge is q = - 4 μc, while the bottom two are q1 = q = +1 μc. What is the magnitude of the net force

More information

PHYSICS 102 EXAM #2 --- MULTIPLE CHOICE Name Choose the one alternative that best completes the statement or answers the question. March 31, 2005 1) The figure below shows 3 identical lightbulbs connected

More information

Physics 2212 GH Quiz #4 Solutions Spring 2015

Physics 2212 GH Quiz #4 Solutions Spring 2015 Physics 1 GH Quiz #4 Solutions Spring 15 Fundamental Charge e = 1.6 1 19 C Mass of an Electron m e = 9.19 1 31 kg Coulomb constant K = 8.988 1 9 N m /C Vacuum Permittivity ϵ = 8.854 1 1 C /N m Earth s

More information

Solution Derivations for Capa #10

Solution Derivations for Capa #10 Solution Derivations for Capa #10 1) A 1000-turn loop (radius = 0.038 m) of wire is connected to a (25 Ω) resistor as shown in the figure. A magnetic field is directed perpendicular to the plane of the

More information

PHYSICS 212 INDUCED VOLTAGES AND INDUCTANCE WORKBOOK ANSWERS

PHYSICS 212 INDUCED VOLTAGES AND INDUCTANCE WORKBOOK ANSWERS PHYSICS 212 CHAPTER 20 INDUCED VOLTAGES AND INDUCTANCE WORKOOK ANSWERS STUDENT S FULL NAME (y placing your name above and submitting this for credit you are affirming this to be predominantly your own

More information

Physics 6C, Summer 2006 Homework 1 Solutions F 4

Physics 6C, Summer 2006 Homework 1 Solutions F 4 Physics 6C, Summer 006 Homework 1 Solutions All problems are from the nd edition of Walker. Numerical values are different for each student. Chapter Conceptual Questions 18. Consider the four wires shown

More information

2. The sum of the emf s and potential differences around a closed loop equals zero is a consequence

2. The sum of the emf s and potential differences around a closed loop equals zero is a consequence Chapter 27: CIRCUITS 1 The sum of the currents into a junction equals the sum of the currents out of the junction is a consequence of: A Newton s third law B Ohm s law C Newton s second law D conservation

More information

MIDTERM REVIEW Chapters PHYSICS 1402 Brooks

MIDTERM REVIEW Chapters PHYSICS 1402 Brooks MIDTERM REVIEW Chapters 15 24 PHYSICS 1402 Brooks 1) The electric field shown in Figure 15-3 Figure 15-3 A) decreases to the right. B) is uniform. C) increases down. D) decreases down. E) increases to

More information

Electromagnetic Induction

Electromagnetic Induction . Electromagnetic Induction Concepts and Principles Creating Electrical Energy When electric charges move, their electric fields vary. In the previous two chapters we considered moving electric charges

More information

Last Name: First Name: Physics 102 Spring 2006: Exam #2 Multiple-Choice Questions 1. A charged particle, q, is moving with speed v perpendicular to a uniform magnetic field. A second identical charged

More information

Conceptual Questions Two charged objects are separated by a distance d. The first charge is larger in magnitude than the second charge.

Conceptual Questions Two charged objects are separated by a distance d. The first charge is larger in magnitude than the second charge. Conceptual Questions 16 1. Two charged objects are separated by a distance d. The first charge is larger in magnitude than the second charge. A) The first charge exerts a larger force on the second charge.

More information

ConcepTest PowerPoints

ConcepTest PowerPoints ConcepTest PowerPoints Chapter 20 Physics: Principles with Applications, 6 th edition Giancoli 2005 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for

More information

3/22/2016. Chapter 26 The Electric Field. Chapter 26 Preview. Chapter 26 Preview. Chapter Goal: To learn how to calculate and use the electric field.

3/22/2016. Chapter 26 The Electric Field. Chapter 26 Preview. Chapter 26 Preview. Chapter Goal: To learn how to calculate and use the electric field. Chapter 26 The Electric Field Chapter Goal: To learn how to calculate and use the electric field. Slide 26-2 Chapter 26 Preview Slide 26-3 Chapter 26 Preview Slide 26-4 1 Chapter 26 Preview Slide 26-5

More information

45. The peak value of an alternating current in a 1500-W device is 5.4 A. What is the rms voltage across?

45. The peak value of an alternating current in a 1500-W device is 5.4 A. What is the rms voltage across? PHYS Practice Problems hapters 8- hapter 8. 45. The peak value of an alternating current in a 5-W device is 5.4 A. What is the rms voltage across? The power and current can be used to find the peak voltage,

More information

1 of 7 4/13/2010 8:05 PM

1 of 7 4/13/2010 8:05 PM Chapter 33 Homework Due: 8:00am on Wednesday, April 7, 2010 Note: To understand how points are awarded, read your instructor's Grading Policy [Return to Standard Assignment View] Canceling a Magnetic Field

More information

Candidate Number. General Certificate of Education Advanced Level Examination June 2010

Candidate Number. General Certificate of Education Advanced Level Examination June 2010 entre Number andidate Number Surname Other Names andidate Signature General ertificate of Education dvanced Level Examination June 1 Physics PHY4/1 Unit 4 Fields and Further Mechanics Section Friday 18

More information

Chapter 14 Magnets and Electromagnetism

Chapter 14 Magnets and Electromagnetism Chapter 14 Magnets and Electromagnetism Magnets and Electromagnetism In the 19 th century experiments were done that showed that magnetic and electric effects were just different aspect of one fundamental

More information

Direction of Induced Current

Direction of Induced Current Direction of Induced Current Bar magnet moves through coil Current induced in coil A S N v Reverse pole Induced current changes sign B N S v v Coil moves past fixed bar magnet Current induced in coil as

More information

Electric Circuits. Concepts and Principles. Electric Circuits as Applied Physics. The Resistor

Electric Circuits. Concepts and Principles. Electric Circuits as Applied Physics. The Resistor . Electric ircuits oncepts and Principles Electric ircuits as Applied Physics Electric circuits are one of the most practical applications of our understanding of electric and magnetic fields. In general,

More information

Physics 104 Exam 2 Name

Physics 104 Exam 2 Name 1. An electron moves with a velocity of 7.0 x 10 6 m/s due west in a uniform magnetic field of magnitude 4.0 T at an angle of 30 ast of orth. At the same point an electric field of magnitude 9.0 x 10 6

More information

2. B The magnetic properties of a material depend on its. A) shape B) atomic structure C) position D) magnetic poles

2. B The magnetic properties of a material depend on its. A) shape B) atomic structure C) position D) magnetic poles ame: Magnetic Properties 1. B What happens if you break a magnet in half? A) One half will have a north pole only and one half will have a south pole only. B) Each half will be a new magnet, with both

More information

Eðlisfræði 2, vor 2007

Eðlisfræði 2, vor 2007 [ Assignment View ] [ Pri Eðlisfræði 2, vor 2007 29a. Electromagnetic Induction Assignment is due at 2:00am on Wednesday, March 7, 2007 Credit for problems submitted late will decrease to 0% after the

More information

CET Moving Charges & Magnetism

CET Moving Charges & Magnetism CET 2014 Moving Charges & Magnetism 1. When a charged particle moves perpendicular to the direction of uniform magnetic field its a) energy changes. b) momentum changes. c) both energy and momentum

More information

The purposes of this experiment are to test Faraday's Law qualitatively and to test Lenz's Law.

The purposes of this experiment are to test Faraday's Law qualitatively and to test Lenz's Law. 260 17-1 I. THEORY EXPERIMENT 17 QUALITATIVE STUDY OF INDUCED EMF Along the extended central axis of a bar magnet, the magnetic field vector B r, on the side nearer the North pole, points away from this

More information

Q26.1 Which of the two arrangements shown has the smaller equivalent resistance between points a and b? A. the series arrangement B.

Q26.1 Which of the two arrangements shown has the smaller equivalent resistance between points a and b? A. the series arrangement B. Q26.1 Which of the two arrangements shown has the smaller equivalent resistance between points a and b? A. the series arrangement B. the parallel arrangement C. The equivalent resistance is the same for

More information

Magnetism Conceptual Questions. Name: Class: Date:

Magnetism Conceptual Questions. Name: Class: Date: Name: Class: Date: Magnetism 22.1 Conceptual Questions 1) A proton, moving north, enters a magnetic field. Because of this field, the proton curves downward. We may conclude that the magnetic field must

More information

Direct Current Circuits. Solutions of Home Work Problems

Direct Current Circuits. Solutions of Home Work Problems Chapter 28 Direct Current Circuits. s of Home Work Problems 28.1 Problem 28.14 (In the text book) A 6.00-V battery supplies current to the circuit shown in Figure (28.14). When the doublethrow switch S

More information

Physics 210 Q ( PHYSICS210BRIDGE ) My Courses Course Settings

Physics 210 Q ( PHYSICS210BRIDGE ) My Courses Course Settings 1 of 16 9/7/2012 1:10 PM Logged in as Julie Alexander, Instructor Help Log Out Physics 210 Q1 2012 ( PHYSICS210BRIDGE ) My Courses Course Settings Course Home Assignments Roster Gradebook Item Library

More information

Phys214 Final Exam. (30 problems. 10 points each. Total 300 points)

Phys214 Final Exam. (30 problems. 10 points each. Total 300 points) Phys214 Final Exam (30 problems. 10 points each. Total 300 points) 1. A woman 1.6 m in height wants a plane mirror so that she can view her full height. The minimum vertical size of such a mirror is A.

More information

PHYS 155: Final Tutorial

PHYS 155: Final Tutorial Final Tutorial Saskatoon Engineering Students Society eric.peach@usask.ca April 13, 2015 Overview 1 2 3 4 5 6 7 Tutorial Slides These slides have been posted: sess.usask.ca homepage.usask.ca/esp991/ Section

More information

Profs. A. Petkova, A. Rinzler, S. Hershfield. Exam 2 Solution

Profs. A. Petkova, A. Rinzler, S. Hershfield. Exam 2 Solution PHY2049 Fall 2009 Profs. A. Petkova, A. Rinzler, S. Hershfield Exam 2 Solution 1. Three capacitor networks labeled A, B & C are shown in the figure with the individual capacitor values labeled (all units

More information

The Big Idea. Key Concepts

The Big Idea. Key Concepts The ig Idea For static electric charges, the electromagnetic force is manifested by the Coulomb electric force alone. If charges are moing, howeer, there is created an additional force, called magnetism.

More information

Chapter 23 Magnetic Flux and Faraday s Law of Induction

Chapter 23 Magnetic Flux and Faraday s Law of Induction Chapter 23 Magnetic Flux and Faraday s Law of Induction 23.1 Induced EMF 23.2 Magnetic Flux 23.3 Faraday s Law of Induction 23.4 Lenz s Law 23.5 Mechanical Work and Electrical Energy 23.6 Generators and

More information

PHYS 222 Spring 2012 Final Exam. Closed books, notes, etc. No electronic device except a calculator.

PHYS 222 Spring 2012 Final Exam. Closed books, notes, etc. No electronic device except a calculator. PHYS 222 Spring 2012 Final Exam Closed books, notes, etc. No electronic device except a calculator. NAME: (all questions with equal weight) 1. If the distance between two point charges is tripled, the

More information

Calculate the centripetal acceleration of the boot just before impact

Calculate the centripetal acceleration of the boot just before impact (ii) alculate the centripetal acceleration of the boot just before impact....... (iii) iscuss briefly the radial force on the knee joint before impact and during the impact................. (4) (Total

More information

Chapter 29 Electromagnetic Induction

Chapter 29 Electromagnetic Induction Chapter 29 Electromagnetic Induction - Induction Experiments - Faraday s Law - Lenz s Law - Motional Electromotive Force - Induced Electric Fields - Eddy Currents - Displacement Current and Maxwell s Equations

More information

Magnetism. d. gives the direction of the force on a charge moving in a magnetic field. b. results in negative charges moving. clockwise.

Magnetism. d. gives the direction of the force on a charge moving in a magnetic field. b. results in negative charges moving. clockwise. Magnetism 1. An electron which moves with a speed of 3.0 10 4 m/s parallel to a uniform magnetic field of 0.40 T experiences a force of what magnitude? (e = 1.6 10 19 C) a. 4.8 10 14 N c. 2.2 10 24 N b.

More information

r 0 at infinity p gy v p gy v v arad r Newton s second law dt Solution for above equation: T For a spring mass oscillator, m For a simple pendulum,

r 0 at infinity p gy v p gy v v arad r Newton s second law dt Solution for above equation: T For a spring mass oscillator, m For a simple pendulum, Scalar Product: B B B B B Vector Product: B B sin cos B x x y y z z B B B iˆ y z z y B B ˆj z x x z B B kˆ x y y x Equations of motion: v v at x x vt at v v a( x x) Radial cceleration: v arad r Newton

More information

Fall 12 PHY 122 Homework Solutions #10

Fall 12 PHY 122 Homework Solutions #10 Fall 12 PHY 122 Homework Solutions #10 HW10: Ch.30 Q5, 8, 15,17, 19 P 1, 3, 9, 18, 34, 36, 42, 51, 66 Chapter 30 Question 5 If you are given a fixed length of wire, how would you shape it to obtain the

More information

Clicker Question. Two small objects each with a net charge of +Q exert a force of magnitude F on each other. F +Q

Clicker Question. Two small objects each with a net charge of +Q exert a force of magnitude F on each other. F +Q A hollow metal sphere is electrically neutral (no excess charge). A small amount of negative charge is suddenly placed at one point P on this metal sphere. If we check on this excess negative charge a

More information

HW5 Solutions Notice numbers may change randomly in your assignments and you may have to recalculate solutions for your specific case.

HW5 Solutions Notice numbers may change randomly in your assignments and you may have to recalculate solutions for your specific case. HW5 Solutions Notice numbers may change randomly in your assignments and you may have to recalculate solutions for your specific case. Tipler 21.P.018 Estimate the force required to bind the two protons

More information

ElectroMagnetic Induction. AP Physics B

ElectroMagnetic Induction. AP Physics B ElectroMagnetic Induction AP Physics B What is E/M Induction? Electromagnetic Induction is the process of using magnetic fields to produce voltage, and in a complete circuit, a current. Michael Faraday

More information

) 0.7 =1.58 10 2 N m.

) 0.7 =1.58 10 2 N m. Exam 2 Solutions Prof. Paul Avery Prof. Andrey Korytov Oct. 29, 2014 1. A loop of wire carrying a current of 2.0 A is in the shape of a right triangle with two equal sides, each with length L = 15 cm as

More information

PHYS 189 Final Exam: Practice March, 2014

PHYS 189 Final Exam: Practice March, 2014 PHYS 189 Final Exam: Practice March, 2014 Name: Answer the questions in the spaces provided on the question sheets. If you run out of room for an answer, continue on the back of the page. Multiple choice

More information

Direct-Current Circuits

Direct-Current Circuits Chapter 13 Direct-Current Circuits In This Chapter: Resistors in Series Resistors in Parallel EMF and Internal Resistance Kirchhoff s Rules Resistors in Series The equivalent resistance of a set of resistors

More information

Tuesday, 9 August 2016

Tuesday, 9 August 2016 Tuesday, 9 August 2016 Conceptual Problem 34.10 a When the switch on the left is closed, which direction does current flow in the meter on the right: 1. Right to left 2. Left to right 3. There is no induced

More information

PHY2049 Exam #2 Solutions Fall 2012

PHY2049 Exam #2 Solutions Fall 2012 PHY2049 Exam #2 Solutions Fall 2012 1. The diagrams show three circuits consisting of concentric circular arcs (either half or quarter circles of radii r, 2r, and 3r) and radial segments. The circuits

More information

Homework 6 Solutions PHYS 212 Dr. Amir

Homework 6 Solutions PHYS 212 Dr. Amir Homework 6 Solutions PHYS Dr. Amir Chapter 5: 9. (II) A 00-W lightbulb has a resistance of about Ω when cold (0 C) and 0 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average

More information

UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics

UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics Physics 111.6 MIDTERM TEST #4 March 15, 2007 Time: 90 minutes NAME: (Last) Please Print (Given) STUDENT NO.: LECTURE SECTION (please

More information

Solution: (a) For a positively charged particle, the direction of the force is that predicted by the right hand rule. These are:

Solution: (a) For a positively charged particle, the direction of the force is that predicted by the right hand rule. These are: Problem 1. (a) Find the direction of the force on a proton (a positively charged particle) moving through the magnetic fields as shown in the figure. (b) Repeat part (a), assuming the moving particle is

More information

Physics 30 Worksheet #10 : Magnetism From Electricity

Physics 30 Worksheet #10 : Magnetism From Electricity Physics 30 Worksheet #10 : Magnetism From Electricity 1. Draw the magnetic field surrounding the wire showing electron current below. x 2. Draw the magnetic field surrounding the wire showing electron

More information

2015 Pearson Education, Inc. Section 24.5 Magnetic Fields Exert Forces on Moving Charges

2015 Pearson Education, Inc. Section 24.5 Magnetic Fields Exert Forces on Moving Charges Section 24.5 Magnetic Fields Exert Forces on Moving Charges Magnetic Fields Sources of Magnetic Fields You already know that a moving charge is the creator of a magnetic field. Effects of Magnetic Fields

More information