# CHAPTER 4: MAGNETIC FIELD

Size: px
Start display at page:

Transcription

1 CHAPTER 4: MAGNETIC FIELD PSPM II 2005/2006 NO FIGURE 3 A copper rod of mass 0.08 kg and length 0.20 m is attached to two thin current carrying wires, as shown in FIGURE 3. The rod is perpendicular to a uniform magnetic field of 0.60 T. Determine the magnitude and direction of the electric current to keep the copper rod fixed and stay horizontal. [Ans: I = A; To the right.] [3 marks] PSPM II 2005/2006 NO. 11(C) 11 (c) A rectangular coil of 30 turns has a dimension of 1.0 cm 1.5 cm. The coil experiences a torque of N m when placed in a magnetic field of 0.35 T. What is the current in the coil? [Ans: I = A] PSPM II 2006/2007 NO. 12(A) 12. (a) FIGURE 9 FIGURE 9 shows two long parallel wires 2 cm apart. Wire P carries a current 7 A to the right. Point C is 3 cm from wire Q and in the same plane as wire P and Q. Determine the magnitude and direction of current in wire Q so that the magnetic field at C is zero. [Ans: I Q = 4. 2 A; Towards left.] [6 marks] PCH 1

2 PSPM II 2007/2008 NO. 12(A) 12. (a) A circular coil of 100 turns and cross-sectional area of 2.0 cm 2 carrying a 50 ma current is placed in a magnetic field of 0.5 T parallel to the plane of the coil. Calculate the torque acting on the coil. [Ans: τ = N m] PSPM II 2008/2009 NO FIGURE 2 FIGURE 2 shows two long parallel wires, each carrying a 5 A current in opposite direction. Determine the magnetic field, B at point P, 3 cm from both wires. [Ans: B P = T; Out of paper] PSPM II 2010/2011 NO. 12(A),(B) 12. (a) A 4 cm 8 cm rectangular coil with 120 turns carrying 0.5 ma current is placed in a uniform magnetic field 0.6 T. Calculate the required torque to hold the coil s plane parallel to the field. [Ans: τ = N m] [3 marks] (b) A kg particle of charge 5 nc and velocity 3500 m s 1 enters a region of uniform magnetic field T perpendicular to the field. (i) Calculate the radius of the path of the particle. [Ans: R = m] Explain whether there is any change in the particle s path when the magnetic field is reduced to half and the particle s velocity is increased four times. [Ans: R 2 = 8 R] [5 marks] PSPM II 2011/2012 NO (a) Define one ampere. PCH 2

3 (b) FIGURE 3 A proton moving at m s 1 along the x-axis enters a region of uniform magnetic field of magnitude 1.8 T. The direction of the magnetic field is 30 with the x-axis and parallel to the xy-plane as shown in FIGURE 3. (i) Determine the magnitude and direction of the magnetic force on the proton. [Ans: F = N; in the positive z-direction] If the proton is replaced by an electron moving at the same velocity, compare the magnetic force on the electron to that of the proton. Explain your answer. (iii) Does the speed of the proton be affected by the magnetic field? Explain your answer. [9 marks] (c) A 40 m electric cable carries a current of 28 A from west to east. The earth magnetic field is 50 μt, horizontal and directed from south to north. Determine (i) the magnitude and direction of the magnetic force on the cable. [Ans: F = N; upward] the magnetic force on the cable if it is parallel to the direction of the magnetic field. [Ans: F = 0 N] PSPM II 2012/2013 NO (a) FIGURE 4 PCH 3

4 FIGURE 4 shows a long straight wire carrying a current of I 1 = 4.0 A is placed to the left of a circular loop. The loop has a diameter of d = 0.04 m and carrying a current of I 2 = 2.0 A. Determine the magnitude and direction of the net magnetic field at the center of the loop. [Ans: B = T; into the page] [7 marks] (b) FIGURE 5 FIGURE 5 shows a proton with a speed of m s 1 entering a region of a uniform magnetic field between two plates. The plates are separated by a distance of 0.18 m. (i) Determine the direction of the magnetic force on the proton and sketch its trajectory when it enters the region between the plates. What is the maximum magnitude of the magnetic field so that the proton does not hit the opposite plate? [Ans: B = T] [8 marks] PSPM II 2013/2014 NO (a) (i) In what condition would a charged particle experience a magnetic force? Two charged particles moving in the same direction are projected perpendicularly into a uniform magnetic field. If the particles are deflected in opposite directions, what can you say about them? Explain your answer. (b) A circular loop L 1 of radius 5 cm carries a 15 A current. (i) Calculate the magnetic field at its center. [Ans: B 1 = T] FIGURE 4 PCH 4

5 Another loop L 2 of radius 1.5 cm, having 50 turns and carrying a 2 A current is placed at the center of loop L 1 as shown in FIGURE 4. What will be the resultant magnetic field at their common center if the two currents flow in the same direction? [Ans: B resultant = T] (iii) If loop L 1 in FIGURE 4 is fixed but loop L 2 is free to turn about its central axis, what will be the torque on loop L 2 when its plane is parallel to loop L 1? [Ans: τ = N m] [6 marks] (c) A 2 A current flows towards left in a wire having a mass per unit length of 0.5 g cm 1. If the wire is placed horizontally on a table, what are the magnitude and direction of the minimum magnetic field needed to float the wire? [Ans: B = T; or y or (out of page)] [5 marks] PSPM II 2014/2015 NO (a) Sketch the magnetic field lines for a current-carrying (i) straight wire. solenoid. (b) A two turns circular coil was made from a 3 m long wire. Calculate the magnetic field strength at the center of the coil if it carries 0.5 A current. [Ans: B = T] [3 marks] (c) FIGURE 5 FIGURE 5 shows two wires separated by 12 cm carrying currents of 3.5 A in opposite directions. (i) Determine the direction and magnitude of the net magnetic field at a point midway between the wires. [Ans: B net = T; Into the page] Calculate the magnitude of the net force per unit length experienced by the wires. (d) [Ans: F l = N m 1 ] [6 marks] FIGURE 6 PCH 5

6 FIGURE 6 shows an electron travelling in a region of uniform electric and magnetic fields which are perpendicular to one another. The strength of electric field and magnetic field are V m 1 and T respectively. (i) Calculate the velocity of electron. [Ans: v = m s 1 ] Calculate the kinetic energy of electron. [Ans: KE = J] (iii) If the electric field is removed, determine the magnitude and direction of the magnetic force on the electron. [Ans: F = N; Towards the left plate] PCH 6

### 2. Draw the Magnetic Field lines created by the below two bar magnets. Homework 3. Draw the Magnetic Field lines created by the below bar magnets.

Chapter Problems Magnetic Fields 1. Draw the Magnetic Field lines created by the below bar magnet. S N 2. Draw the Magnetic Field lines created by the below two bar magnets S N N S 3. Draw the Magnetic

### Ch 17 Problem Set 31. A toaster is rated at 600 W when connected to a 120-V source. What current does the toaster carry, and what is its resistance?

Ch 17 Problem Set 31. A toaster is rated at 600 W when connected to a 120-V source. What current does the toaster carry, and what is its resistance? 33. How many 100-W lightbulbs can you use in a 120-V

### 4. An electron moving in the positive x direction experiences a magnetic force in the positive z direction. If B x

Magnetic Fields 3. A particle (q = 4.0 µc, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a magnitude of 2.0 km/s and a direction that is 50 away from that of the magnetic field.

### week 8 The Magnetic Field

week 8 The Magnetic Field General Principles General Principles Applications Start with magnetic forces on moving charges and currents A positive charge enters a uniform magnetic field as shown. What is

### 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

### PHYSICS 3204 PUBLIC EXAM QUESTIONS (Magnetism &Electromagnetism)

PHYSICS 3204 PUBLIC EXAM QUESTIONS (Magnetism &Electromagnetism) NAME: August 2009---------------------------------------------------------------------------------------------------------------------------------

### Chapter 4: Magnetic Field

Chapter 4: Magnetic Field 4.1 Magnetic Field 4.1.1 Define magnetic field Magnetic field is defined as the region around a magnet where a magnetic force can be experienced. Magnetic field has two poles,

### Magnetism Chapter Questions

Magnetism Chapter Questions 1. Both Electric and Magnetic Forces will cause objects to repel and attract each other. What is a difference in the origin of these forces? 2. A Magnet has a north and a south

### Chapter 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

### Version 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

### PHYS 2326 University Physics II Class number

PHYS 2326 University Physics II Class number HOMEWORK- SET #1 CHAPTERS: 27,28,29 (DUE JULY 22, 2013) Ch. 27.======================================================= 1. A rod of 2.0-m length and a square

Question 4.1: A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil? Number of turns

### θ θ θ θ current I Fig. 6.1 The conductor and the magnetic field are both in the plane of the paper. State

3 1 (a) A straight conductor carrying a current I is at an angle θ to a uniform magnetic field of flux density B, as shown in Fig. 6.1. magnetic field, flux density B θ θ θ θ current I Fig. 6.1 The conductor

### PhysicsAndMathsTutor.com 1

PhysicsndMathsTutor.com 1 Q1. Which line, to, correctly describes the trajectory of charged particles which enter, at right angles, (a) a uniform electric field, and (b) a uniform magnetic field? (a) uniform

### Chapter 27 Magnetism. Copyright 2009 Pearson Education, Inc.

Chapter 27 Magnetism 27-1 Magnets and Magnetic Fields Magnets have two ends poles called north and south. Like poles repel; unlike poles attract. 27-1 Magnets and Magnetic Fields However, if you cut a

1. 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

### Chapter 4 - Moving Charges and Magnetism. Magnitude of the magnetic field at the centre of the coil is given by the relation,

Question 4.1: A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil? Number of turns

### Magnetic Fields Due to Currents

PHYS102 Previous Exam Problems CHAPTER 29 Magnetic Fields Due to Currents Calculating the magnetic field Forces between currents Ampere s law Solenoids 1. Two long straight wires penetrate the plane of

### Magnetism Practice Problems PSI AP Physics B

Magnetism Practice Problems PSI AP Physics B Name 1. A straight wire carries a current down. What is the direction of the magnetic field at the point to the East from the wire? (A) West (B) East (C) North

### (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

### Chapter 27 Magnetism 1/20/ Magnets and Magnetic Fields Magnets and Magnetic Fields Magnets and Magnetic Fields

Chapter 27 Magnetism Magnets have two ends poles called north and south. Like poles repel; unlike poles attract. However, if you cut a magnet in half, you don t get a north pole and a south pole you get

### Magnets and Electromagnetism

Review 9 Magnets and Electromagnetism 1. A 1.2 cm wire carrying a current of 0.8 A is perpendicular to a 2.4 T magnetic field. What is the magnitude of the force on the wire? 2. A 24 cm length of wire

### Fig. 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

### 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

### PHYSICS 12 NAME: Electrostatics Review

NAME: Electrostatics Review 1. The diagram below shows two positive charges of magnitude Q and 2Q. Which vector best represents the direction of the electric field at point P, which is equidistant from

### A) B/2 B) 4B C) B/4 D) 8B E) 2B

A long straight wire carries a current I. If the magnetic field a distance d from the wire has a magnitude B, what is the magnitude of the magnetic field at a distance 2d from the wire? A) B/2 B) 4B C)

### PHYSICS 12 NAME: Magnetic Field and Force

NAME: Magnetic Field and Force 1. An aircraft whose wingspan is 15 m carries a static charge of 0.60 C. It travels at 240 m/s perpendicular to a 1.5x10-4 T magnetic field. What magnetic force does the

### Chapter 27 Magnetism. Copyright 2009 Pearson Education, Inc.

Chapter 27 Magnetism 27-1 Magnets and Magnetic Fields Magnets have two ends poles called north and south. Like poles repel; unlike poles attract. 27-1 Magnets and Magnetic Fields However, if you cut a

### End-of-Chapter Exercises

End-of-Chapter Exercises Exercises 1 12 are primarily conceptual questions, designed to see whether you understand the main concepts of the chapter. 1. A charged particle is moving with a constant velocity

### PHYS102 Previous Exam Problems. Electric Fields

PHYS102 Previous Exam Problems CHAPTER 22 Electric Fields Electric field Point charge in an electric field Electric dipole 1. Two identical charges, each of charge Q, are positioned at points A (5.0 m,

### Physics 2401 Summer 2, 2008 Exam III

Physics 2401 Summer 2, 2008 Exam e = 1.60x10-19 C, m(electron) = 9.11x10-31 kg, ε 0 = 8.845x10-12 C 2 /Nm 2, k e = 9.0x10 9 Nm 2 /C 2, m(proton) = 1.67x10-27 kg. n = nano = 10-9, µ = micro = 10-6, m =

### 224 g (Total 1 mark) A straight line in a direction opposite to that of the field.

Q1. The diagram shows a rigidly-clamped straight horizontal current-carrying wire held mid-way between the poles of a magnet on a top pan balance. The wire is perpendicular to the magnetic field direction.

### MOTION OF A CHARGED PARTICLE IN A UNIFORM MAGNETIC FIELD

MOTION OF A CHARGED PARTICLE IN A UNIFORM MAGNETIC FIELD When the velocity of a charged particle is perpendicular to a uniform magnetic field, the particle moves in a circular path in a plane perpendicular

### PHYSICS - CLUTCH CH 26: MAGNETIC FIELDS AND FORCES.

!! www.clutchprep.com CONCEPT: HOW MAGNETS WORK Forever ago we found metals that would attract each other. First found in island of Magnesia named. - Most common are iron (Fe), cobalt (Co), nickel (Ni),

### Physics 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

### CHAPTER 1: ELECTROSTATICS

CHAPTER 1: ELECTROSTATICS PSPM II 2005/2006 NO. 2 2. A 2 μc charge lies on the straight line between a 3 μc charge and a 1 μc charge. The separation between the 3 μc and 1 μc is 4 cm. (a) Draw the position

### MAGNETIC EFFECT OF CURRENT

MAGNETIC EFFECT OF CURRENT VERY SHORT ANSWER QUESTIONS Q.1 Who designed cyclotron? Q.2 What is the magnetic field at a point on the axis of the current element? Q.3 Can the path of integration around which

### Physics 212 Question Bank III 2006

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. The magnetic force on a moving charge is (A)

### Other Formulae for Electromagnetism. Biot's Law Force on moving charges

Other Formulae for Electromagnetism Biot's Law Force on moving charges 1 Biot's Law. Biot's Law states that the magnetic field strength (B) is directly proportional to the current in a straight conductor,

### HW7: Ch. 26 P 34, 36 Ch.27 Q 2, 4, 8, 18 P 2, 8, 17, 19, 37

Fall 12 PHY 122 Homework Solutions #7 HW7: Ch. 26 P 34, 36 Ch.27 Q 2, 4, 8, 18 P 2, 8, 17, 19, 37 Chapter 26 Problem 34 Determine the magnitudes and directions of the currents in each resistor shown in

### 4. Theunitsoftheelectric eldare: A. N C 2 B. C/N C. N D. N/C E. C=m 2 ans: D Section: 22{2; Di±culty: E. Chapter 22: ELECTRIC FIELDS 377

Chapter 22: ELECTRIC FIELDS 1 An electric eld is most directly related to: A the momentum of a test charge B the kinetic energy of a test charge C the potential energy of a test charge D the force acting

### Phys102 Lecture 16/17 Magnetic fields

Phys102 Lecture 16/17 Magnetic fields Key Points Electric Currents Produce Magnetic Fields Force on an Electric Current in a Magnetic Field; Definition of B Force on an Electric Charge Moving in a Magnetic

### MAGNETIC FIELDS CHAPTER 21

MAGNETIC FIELDS CHAPTER 21 1. A magnetic field may exist at a point as a result of moving charged particle 2. When a tiny bar magnet is suspended horizontally from its center, it lines up along the north

### Magnetic Force. A vertical wire carries a current and is in a vertical magnetic field. What is the direction of the force on the wire?

Magnetic Force A vertical wire carries a current and is in a vertical magnetic field. What is the direction of the force on the wire? (a) left (b) right (c) zero (d) into the page (e) out of the page B

### Physics 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

### Unit 8: Electromagnetism

Multiple Choice Portion Unit 8: Electromagnetism 1. Four compasses are placed around a conductor carrying a current into the page, as shown below. Which compass correctly shows the direction of the magnetic

### Intermediate Physics PHYS102

Intermediate Physics PHYS102 Dr Richard H. Cyburt Assistant Professor of Physics My office: 402c in the Science Building My phone: (304) 384-6006 My email: rcyburt@concord.edu My webpage: www.concord.edu/rcyburt

### where the magnetic field is directed from south to north. It will be deflected:

Section: Magnetic Field Take Home Test Due Tues. Apr. 2----all work should be shown on test---you will hand in the scantron for scoring 1. A hydrogen atom that has lost its electron is moving east in a

### 21 MAGNETIC FORCES AND MAGNETIC FIELDS

CHAPTER 1 MAGNETIC FORCES AND MAGNETIC FIELDS ANSWERS TO FOCUS ON CONCEPTS QUESTIONS 1 (d) Right-Hand Rule No 1 gives the direction of the magnetic force as x for both drawings A and B In drawing C, the

### Chapter 19. Magnetism. 1. Magnets. 2. Earth s Magnetic Field. 3. Magnetic Force. 4. Magnetic Torque. 5. Motion of Charged Particles. 6.

Chapter 19 Magnetism 1. Magnets 2. Earth s Magnetic Field 3. Magnetic Force 4. Magnetic Torque 5. Motion of Charged Particles 6. Amperes Law 7. Parallel Conductors 8. Loops and Solenoids 9. Magnetic Domains

### PHYS102 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

### 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

### Class XII- Physics - Assignment Topic: - Magnetic Effect of Current

LJPS Gurgaon 1. An electron beam projected along +X axis, experiences a force due to a magnetic field along +Y axis. What is the direction of the magnetic field? Class XII- Physics - Assignment Topic:

### 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

### So, according to classical theory, electrical and gravitational forces are absolutely separate and distinct phenomena.

Chapter 21 Magnetic Forces and Magnetic Fields Thursday, March 11, 2010 8:26 PM According to classical theory, there is no connection between electric charge and gravitational forces. Gravitational forces

### CPS lesson Magnetism ANSWER KEY

CPS lesson Magnetism ANSWER KEY 1. Two wire strips carry currents from P to Q and from R to S. If the current directions in both wires are reversed, the net magnetic force of strip 1 on strip 2: * A. remains

### SPH 4U: Unit 3 - Electric and Magnetic Fields

Name: Class: _ Date: _ SPH 4U: Unit 3 - Electric and Magnetic Fields Modified True/False (1 point each) Indicate whether the statement is true or false. If false, change the identified word or phrase to

### CHAPTER 21 MAGNETIC FORCES AND MAGNETIC FIELDS

CHAPTER 21 MAGNETIC FORCES AND MAGNETIC FIELDS PROBLEMS 5. SSM REASONING According to Equation 21.1, the agnitude of the agnetic force on a oving charge is F q 0 vb sinθ. Since the agnetic field points

### Homework (lecture 11): 3, 5, 9, 13, 21, 25, 29, 31, 40, 45, 49, 51, 57, 62

Homework (lecture ): 3, 5, 9, 3,, 5, 9, 3, 4, 45, 49, 5, 57, 6 3. An electron that has velocity: moves through the uniform magnetic field (a) Find the force on the electron. (b) Repeat your calculation

### Question Bank 4-Magnetic effects of current

Question Bank 4-Magnetic effects of current LEVEL A 1 Mark Questions 1) State Biot-Savart s law in vector form. 2) What is the SI unit of magnetic flux density? 3) Define Tesla. 4) A compass placed near

### Problems set # 7 Physics 169 March 31, 2015

Prof. Anchordoqui Problems set # 7 Physics 69 March 3, 05. (i) Determine the initial direction of the deflection of charged particles as they enter the magnetic fields as shown in Fig.. (ii) At the Equator

### SPH4U Sample Test - Electric & Magnetic Fields

SPH4U Sample Test - Electric & Magnetic Fields Modified True/False Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the sentence or statement

### 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

### St. Vincent College PH : General Physics II. Exam 5 4/8/2016

St. Vincent College PH 112-01: General Physics II Exam 5 4/8/2016 The exam consists of 4 questions. The questions may not be worth the same number of points, so read the entire exam before beginning work.

### D. To the right (Total 1 mark)

1. An electron passes the north pole of a bar magnet as shown below. What is the direction of the magnetic force on the electron? A. Into the page B. Out of the page C. To the left D. To the right 2. A

### Chapter 7 Magnetism 7.1 Introduction Magnetism has been known thousands of years dating back to the discovery recorded by the ancient Greek.

Chapter 7 Magnetism 7.1 Introduction Magnetism has been known thousands of years dating back to the discovery recorded by the ancient Greek. 1900 Maxwell combine the theory of electric and magnetic to

### University Physics (Prof. David Flory) Chapt_29 Sunday, February 03, 2008 Page 1

University Physics (Prof. David Flory) Chapt_29 Sunday, February 03, 2008 Page 1 Name: Date: 1. A loop of current-carrying wire has a magnetic dipole moment of 5 10 4 A m 2. The moment initially is aligned

### 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

### 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

### Physics H. Instructor: Dr. Alaa Mahmoud

Physics 202 1436-1437 H Instructor: Dr. Alaa Mahmoud E-mail: alaa_y_emam@hotmail.com Chapter 28 magnetic Field Magnetic fingerprinting allows fingerprints to be seen on surfaces that otherwise would not

### Unit 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?

### 1 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

### PS 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,

### Physics Week 5(Sem. 2) Name. Magnetism. Chapter Summary. Magnetic Fields

Physics Week 5(Sem. 2) Name Chapter Summary Magnetism Magnetic Fields Permanent magnets have long been used in navigational compasses. The needle in a compass is supported to allow it to freely rotate

### Force Due to Magnetic Field You will use

Force Due to Magnetic Field You will use Units: 1 N = 1C(m/s) (T) A magnetic field of one tesla is very powerful magnetic field. Sometimes it may be convenient to use the gauss, which is equal to 1/10,000

### Physics Tutorial MF1 Magnetic Forces

Physics Tutorial MF1 Magnetic Forces 1 Magnetic Forces The force F on a charge q moving with velocity v in a magnetic field is: F = qv The force F on a straight conductor of length L carrying a current

### MAGNETIC EFFECTS OF CURRENT & MAGNETISM HOTS QUESTIONS (SOLVED)

MAGNETIC EFFECTS OF CURRENT & MAGNETISM HOTS QUESTIONS (SOLVED) Q1> A long straight wire AB carries a current of 4 A. A proton p travels at 4* 10 6 ms -1, parallel to the wire, 0.2m from it and in a direction

### Electric_Field_core_P1

Electric_Field_core_P1 1. [1 mark] An electron enters the region between two charged parallel plates initially moving parallel to the plates. The electromagnetic force acting on the electron A. causes

### TIME OF COMPLETION NAME SOLUTION DEPARTMENT OF NATURAL SCIENCES. PHYS 1112, Exam 2 Section 1 Version 1 April 2, 2013 Total Weight: 100 points

TIME OF COMPLETION NAME SOLUTION DEPARTMENT OF NATURAL SCIENCES PHYS 1112, Exam 2 Section 1 Version 1 April 2, 2013 Total Weight: 100 points 1. Check your examination for completeness prior to starting.

### Universe Video. Magnetic Materials and Magnetic Fields Lab Activity. Discussion of Magnetism and Magnetic Fields

Date Zero Hour In Class Homework Magnetism Intro: Mechanical 1/5 Tue (A) Universe Video 1/6 Wed (B) 1/7 Thur (C) Magnetic Materials and Magnetic Fields Lab Activity 1/8 Fri (A) Discussion of Magnetism

### AP 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

### General Physics (PHY 2140)

General Physics (PHY 2140) Lecture 8 Electricity and Magnetism 1. Magnetism Application of magnetic forces Ampere s law 2. Induced voltages and induction Magnetic flux http://www.physics.wayne.edu/~alan/2140website/main.htm

### Magnetic Fields & Forces

Magnetic Fields & Forces Oersted discovered that an electric current will produce a magnetic field around conductor only a moving charge creates a magnetic field the magnetic field is circular around the

### AP Physics 2 Electromagnetic Induction Multiple Choice

Slide 1 / 50 AP Physics 2 Electromagnetic Induction Multiple Choice www.njctl.org Slide 2 / 50 1 A beam of electrons travels between two parallel coils of wire, as shown in the figures above. When the

### 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)

### Set of sure shot questions of Magnetic effect of Current for class XII CBSE Board Exam Reg.

Set of sure shot questions of Magnetic effect of Current for class XII CBSE Board Exam. 2016- Reg. 1 Two Parallel Conducting wires carrying current in the same direction attract each other.why? I 1 A B

### P Q 2 = -3.0 x 10-6 C

1. Which one of the following represents correct units for electric field strength? A. T B. N/C C. J / C D. N m 2 /C 2 2. The diagram below shows two positive charges of magnitude Q and 2Q. P Q 2Q Which

### Unit 7 ~ Learning Guide Name:

Unit 7 ~ Learning Guide Name: Instructions: Using a pencil, complete the following notes as you work through the related lessons. Show ALL work as is explained in the lessons. You are required to have

### 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.

### (a) What is the magnitude of the electric force between the proton and the electron?

.3 Solved Problems.3. Hydrogen Atom In the classical model of the hydrogen atom, the electron revolves around the proton with a radius of r = 053. 0 0 m. The magnitude of the charge of the electron and

### Lorentz Force. Velocity Selector

Lecture 9-1 Lorentz Force Let E and denote the electric and magnetic vector fields. The force F acting on a point charge q, moving with velocity v in the superimosed E fields is: F qe v This is called

### CHAPTER 20 Magnetism

CHAPTER 20 Magnetism Units Magnets and Magnetic Fields Electric Currents Produce Magnetic Fields Force on an Electric Current in a Magnetic Field; Definition of B Force on Electric Charge Moving in a Magnetic

### PRACTICE EXAM 2 for Midterm 2

PRACTICE EXAM 2 for Midterm 2 Multiple Choice Questions 1) In the circuit shown in the figure, all the lightbulbs are identical. Which of the following is the correct ranking of the brightness of the bulbs?

### Magnets. 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

### The rectangular loop shown in the figure is pivoted about the y axis and carries a current of 15.0 in the direction indicated. T +

Heimadæmi 6 Due: 11:00pm on Thursday, February 25, 2016 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 27.68 The rectangular loop shown in the figure

### Magnetic Fields & Forces

Magnetic Fields & Forces Oersted discovered that an electric current will produce a magnetic field around conductor only a moving charge creates a magnetic field the magnetic field is circular around the

### University Physics Volume II Unit 2: Electricity and Magnetism Chapter 11: Magnetic Forces and Fields

University Physics Volume II 1. Discuss the similarities and differences between the electrical force on a charge and the magnetic force on a charge. Both are field dependent. Electrical force is dependent

### SECTION B Induction. 1. The rate of change of flux has which of the following units A) farads B) joules C) volts D) m/s E) webers

SECTION B Induction 1. The rate of change of flux has which of the following units ) farads B) joules C) volts D) m/s E) webers 2. For the solenoids shown in the diagram (which are assumed to be close