Physics Tutorial MF1 Magnetic Forces
|
|
- Russell Skinner
- 5 years ago
- Views:
Transcription
1 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 i in a uniform magnetic field is: F = il The torque on a current loop in a uniform magnetic field: τ = i A 1.1 A charge q = 27 mc is travelling at a speed of v = 10 m/s, and enters a magnetic field of magnitude = 1.3 T. (a) What are the magnitudes of the maximum and minimum possible forces on the charge? (b) If the charge is moving in the x-y plane at 30 to the x-axis, and the magnetic field is in the direction of the y-axis, calculate the magnitude of the magnetic force. (c) Repeat the previous calculation, this time with the magnetic field in the direction of the z-axis. 1.2 Calculate the force acting on a proton (q proton = C) travelling with velocity v = 5i + 3j 4k m/s in a magnetic field = 4k T. 1.3 Calculate the force acting on an electron with velocity v = 2i 4j m/s in a magnetic field = 3i + 2j T. 1
2 1.4 A proton (m = kg) moving perpendicular to a magnetic field of 5.0 mt experiences a force of magnitude N. (a) What is the speed of the proton? (b) What potential difference is required to accelerate the proton to this speed from rest? (c) What is the radius of the proton s circular path? 1.5 A singly charged positive ion with mass m = kg is accelerated through a potential difference of 833 V before entering a magnetic field with magnitude = 0.92 T. Calculate the radius of the circular path of the ion in the magnetic field. 1.6 A wire carries a current of 1.8 A. A straight section of this wire of length 0.57 m is positioned so that the current flows in the +x direction within a magnetic field = 0.35j T. What is the force on this wire? 1.7 What would be the force on the wire in the previous question if it was moved to be in the y direction, in the same magnetic field? 1.8 A conductor of linear mass density µ = 0.50 g/cm is suspended by two thin conducting wires within a magnetic field as shown: L (a) When a current of 2.0 A is run through the conductor, the tensions in the supporting wires are measured to be zero. What must be the direction of this current? What is the magnitude of the magnetic field? (b) When the current is reduced to 1.0 A, then the tension in one wire is measured to be 0.25 N. What is the length L of the conductor? (c) If the breaking tension in each of the supporting wires is 5.0 N, what is the magnitude and direction of the smallest current that will cause the wires to break? 2
3 1.9 A rectangular wire loop rests on a table-top, with a uniform magnetic field directed parallel to the table-top as shown below, looking down from above: I h d (a) If the linear mass density of the wire is µ kg/m, determine an expression for the minimum current I required for the loop to move. (b) What current would be required if the magnetic field s direction was changed to be vertically out of the table-top? 1.10 A proton has a kinetic energy of 20 MeV, and is travelling in the x-y plane at 45 to the x-axis when it enters a region of uniform magnetic field = 1.5k T as shown: 45 θ d Calculate: (a) the angle θ of its exit (b) the distance d between the entry and exit points of the proton into the region of field. (c) The change in kinetic energy of the proton A current i = 2 A flows in a loop within a uniform magnetic field = 0.6 T in the x direction, as shown below: x y z i 1 m 2 m 2 m Calculate: (a) The torque vector τ acting on the loop. (b) The flux φ of magnetic field throught the loop. 3
4 2 Mass Spectrometer Velocity selector: v selected = E Analyzer: r = ( ) m v q 2.1 Three particles with equal charge and speed enter a uniform magnetic field, where they follow semi-circular paths as shown below: 5 mm 7 mm A (a) What sign is the charge of these particles? (b) Which of the particles has the greatest mass? 7 mm C (c) What is the ratio of masses: m C m? 2.2 An ion source produces doubly ionized gold ions (Au ++ ), each with mass kg. The ions pass through a velocity selector with E = V/m and = T. Then a T magnetic field causes the ions to follow a circular path. What is the radius of this path? 2.3 A velocity selector with an electric field of V/m and magnetic field T is used to select the speed of an ion of charge +e in a mass spectrometer. A T magnetic field in the analyzer bends the ion with a radius of m. (a) What is the mass of the ion? (b) What is the molar mass of the ion? (Avogadro s number = ) (c) What element is the ion? 4
5 3 Cyclotron Cyclotron frequency: Maximum kinetic energy: f = 1 q 2π m KE max = R2 q 2 2 2m 3.1 A small cyclotron has a maximum radius of R = 0.25 m and a magnetic field strength of = 1.7 T. If protons are being accelerated, find: (a) the frequency f needed for the applied voltage (b) the magnitude of the applied voltage (c) the kinetic energy of the protons emitted (in ev) (d) the velocity of these protons 3.2 Recalculate the previous questions if the protons are replaced by π + mesons. (the π + is an unstable particle which can be produced in the lab - it has the same charge as a proton, but a mass of kg) 3.3 A beam of protons moves in a circular path with radius 0.25 m. The beam is perpendicular to a 0.30 T magnetic field. Calculate: (a) the speed of each proton? (b) the cyclotron frequency of these protons. (c) the centripetal force acting on each proton. 5
6 Answers 1.1 (a) 0.35 N, zero (b) 0.30 N (c) 0.35 N 1.2 (1.9i 3.2j) N k N 1.4 (a) m/s (b) 1.1 kv (c) 96 cm cm k N 1.7 zero 1.8 (a) to right; 0.25 T (b) 2.0 m (c) 18 A to left 1.9 (a) I = µg ( 1 + d h) (b) no motion for any value of I since ΣF = 0 and τ = (a) 45 (b) 61 cm (c) zero (magnetic fields never do work) 1.11 (a) 4.8k Nm (b) 1.2 Tm (a) - (b) C (c) cm 2.3 (a) kg (b) 197 g (c) probably gold (see previous question) 3.1 (a) 26 MHz (b) any value will work! (c) 8.75 MeV (d) m/s 3.2 (a) 175 MHz (c) 58 MeV (d) m/s 0.7c (relativity required!) 3.3 (a) m/s (b) 4.6 MHz (c) N 6
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
More informationChapter 27 Magnetic Field and Magnetic Forces
Chapter 27 Magnetic Field and Magnetic Forces Lecture by Dr. Hebin Li Goals for Chapter 27 To study magnets and the forces they exert on each other To calculate the force that a magnetic field exerts on
More informationθ 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
More informationToday s lecture: Motion in a Uniform Magnetic Field continued Force on a Current Carrying Conductor Introduction to the Biot-Savart Law
PHYSICS 1B Today s lecture: Motion in a Uniform Magnetic Field continued Force on a Current Carrying Conductor Introduction to the Biot-Savart Law Electricity & Magnetism A Charged Particle in a Magnetic
More informationMagnetic field and magnetic poles
Magnetic field and magnetic poles Magnetic Field B is analogically similar to Electric Field E Electric charges (+ and -)are in analogy to magnetic poles(north:n and South:S). Paramagnetism, Diamagnetism,
More informationChapter 27, 28 & 29: Magnetism & Electromagnetic Induction
Chapter 27, 28 & 29: Magnetism & Electromagnetic Induction The Magnetic Field The Magnetic Force on Moving Charges The Motion of Charged Particles in a Magnetic Field The Magnetic Force Exerted on a Current-Carrying
More informationCHAPTER 4: MAGNETIC FIELD
CHAPTER 4: MAGNETIC FIELD PSPM II 2005/2006 NO. 4 4. 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
More informationHomework 2: Forces on Charged Particles
Homework 2: Forces on Charged Particles 1. In the arrangement shown below, 2 C of positive charge is moved from plate S, which is at a potential of 250 V, to plate T, which is at a potential of 750 V.
More informationUnit 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
More informationDownloaded from
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
More informationMagnetic force and magnetic fields
magnetar Magnetic force and magnetic fields Feb 28, 2012 Magnetic field Iron filings may be used to show the pattern of the magnetic field lines. A compass can be used to trace the field lines. The lines
More informationChapter 29 The Magnetic Field
Chapter 9 The Magnetic Field y analogy with electrostatics, why don t we study magnetostatics first? Due to complicated mathematics (lack of magnetic monopole). In 80, Oersted established the link between
More informationChapter 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
More informationP ROBL E M S. 10. A current-carrying conductor experiences no magnetic force when placed in a certain manner in a uniform magnetic field. Explain. 11.
918 C HAPTER 29 Magnetic Fields 10. A current-carrying conductor experiences no magnetic force when placed in a certain manner in a uniform magnetic field. Explain. 11. s it possible to orient a current
More informationThe Cyclotron I. 1. Motion of the charges occurs in two semicircular containers, D 1. and D 2
1. Motion of the charges occurs in two semicircular containers, D 1 and D 2 referred to as the Dees 2. The Dees are evacuated in order to minimize energy loss from collisions 3. A high frrequency alternating
More informationChapter 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,
More informationCyclotron, final. The cyclotron s operation is based on the fact that T is independent of the speed of the particles and of the radius of their path
Cyclotron, final The cyclotron s operation is based on the fact that T is independent of the speed of the particles and of the radius of their path K 1 qbr 2 2m 2 = mv = 2 2 2 When the energy of the ions
More informationMAGNETIC 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
More informationQuestion 1. Question 2. Question 3
Question 1 Switch S in in the figure is closed at time t = 0, to begin charging an initially uncharged capacitor of capacitance C = 18.2 μf through a resistor of resistance R = 22.3 Ω. At what time (in
More informationThree particles, a, b, and c, enter a magnetic field as shown in the figure. What can you say about the charge on each particle?
1 Three particles, a, b, and c, enter a magnetic field as shown in the figure. What can you say about the charge on each particle? 6 Determine the magnitude and direction of the force on an electron traveling
More informationPhysics 4. Magnetic Forces and Fields. Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Physics 4 Magnetic Forces and Fields What creates a magnetic field? Answer: MOVING CHARGES What is affected by a magnetic field? Answer: MOVING CHARGES We have a formula for magnetic force on a moving
More informationMagnetic 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
More informationPhysicsAndMathsTutor.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
More informationPH 222-2C Fall Magnetic Field. Lecture 13. Chapter 28 (Halliday/Resnick/Walker, Fundamentals of Physics 8 th edition)
PH 222-2C Fall 2012 Magnetic Field Lecture 13 Chapter 28 (Halliday/Resnick/Walker, Fundamentals of Physics 8 th edition) 1 Chapter 28 Magnetic Fields In this chapter we will cover the following topics:
More information1. Write the relation for the force acting on a charge carrier q moving with velocity through a magnetic field in vector notation. Using this relation, deduce the conditions under which this force will
More informationv = E B FXA 2008 UNIT G485 Module Magnetic Fields BQv = EQ THE MASS SPECTROMETER
UNIT G485 Module 1 5.1.2 Magnetic Fields 11 Thus, in order for the particle to suffer NO DEFLECTION and so exit the device at Y : From which : MAGNETIC FORCE UP = ELECTRIC FORCE DOWN BQv = EQ THE MASS
More informationPHYSICS - 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),
More informationPhysics 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
More informationMagnetic Fields. or I in the filed. ! F = q! E. ! F = q! v! B. q! v. Charge q as source. Current I as source. Gauss s Law. Ampere s Law.
Magnetic Fields Charge q as source Gauss s Law Electric field E F = q E Faraday s Law Ampere-Maxwell Law Current I as source Magnetic field B Ampere s Law F = q v B Force on q in the field Force on q v
More information1. Draw in the magnetic field inside each box that would be capable of deflecting the particle along the path shown in each diagram.
Charged Particles in Magnetic Fields 1. Draw in the magnetic field inside each box that would be capable of deflecting the particle along the path shown in each diagram. a b c d 2. a. Three particles with
More informationChapter 29. Magnetic Fields
Chapter 29 Magnetic Fields A Brief History of Magnetism 13 th century BC Chinese used a compass Uses a magnetic needle Probably an invention of Arabic or Indian origin 800 BC Greeks Discovered magnetite
More informationPhysics 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
More information4. 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.
More information1 (a) Define magnetic flux [1]
1 (a) Define magnetic flux..... [1] (b) Fig. 4.1 shows a generator coil of 5 turns and cross-sectional area 2.5 1 3 m 2 placed in a magnetic field of magnetic flux density.35 T. The plane of the coil is
More informationMagnetism 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
More informationQuestion 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
More informationMagnetism. Permanent magnets Earth s magnetic field Magnetic force Motion of charged particles in magnetic fields
Magnetism Permanent magnets Earth s magnetic field Magnetic force Motion of charged particles in magnetic fields Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
More informationThe force F on a charge q moving with velocity v through a region of space with electric field E and magnetic field B is given by: F qe qv B
Lorentz Forces The force F on a charge q moving with velocity v through a region of space with electric field E and magnetic field B is given by: F qe qv B F qv B B F q vbsin 2/20/2018 1 Right Hand Rule
More informationPHY 131 Review Session Fall 2015 PART 1:
PHY 131 Review Session Fall 2015 PART 1: 1. Consider the electric field from a point charge. As you move farther away from the point charge, the electric field decreases at a rate of 1/r 2 with r being
More informationUniversity 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
More informationGood Luck! Mlanie LaRoche-Boisvert - Electromagnetism Electromagnetism and Optics - Winter PH. Electromagnetism and Optics - Winter PH
1 Notes: 1. To submit a problem, just click the Submit button under it. The Submit All button is not necessary. 2. A problem accepted as correct by CAPA will be highlighted in green. Once you see this,
More informationPhysics. Student Materials Advanced Higher. Tutorial Problems Electrical Phenomena HIGHER STILL. Spring 2000
Spring 2000 HIGHER STILL Physics Student Materials Advanced Higher Tutorial Problems Electrical Phenomena TUTORIAL 1 Coulomb's Inverse Square Law 1 A charge of 2.0 x 10-8 C is placed a distance of 2.0
More informationMagnetic 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
More informationPHYSICS 3204 PUBLIC EXAM QUESTIONS (Magnetism &Electromagnetism)
PHYSICS 3204 PUBLIC EXAM QUESTIONS (Magnetism &Electromagnetism) NAME: August 2009---------------------------------------------------------------------------------------------------------------------------------
More informationGravitational Fields Review
Gravitational Fields Review 2.1 Exploration of Space Be able to: o describe planetary motion using Kepler s Laws o solve problems using Kepler s Laws o describe Newton s Law of Universal Gravitation o
More information3/7/2019 N S N S. Magnetism. Magnetism
Magnetism Magnetic charges Called poles Two types, North and South Like poles repel each other Opposite poles attract each other Found only in North/South pairs (Dipoles) Magnetism Magnetic poles Found
More informationMagnets 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
More informationPHY Fall HW6 Solutions
PHY249 - Fall 216 - HW6 Solutions Allen Majewski Department Of Physics, University of Florida 21 Museum Rd. Gainesville, FL 32611 October 11, 216 These are solutions to Halliday, Resnick, Walker Chapter
More informationMagnetic 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
More informationPHYSICS 30 ELECTROMAGNETISM ASSIGNMENT 3 VERSION:0
Communication includes statement of the physics concept used and how it is applied in the situation along with diagrams, word explanations and calculations in a well laid out formula, substitution, answer
More informationCh 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
More informationChapter 23 Electric Potential. Copyright 2009 Pearson Education, Inc.
Chapter 23 Electric Potential Units of Chapter 23 Electric Potential Energy and Potential Difference Relation between Electric Potential and Electric Field Electric Potential Due to Point Charges Potential
More informationPhysics 102: Magnetic Fields
Physics 102: Magnetic Fields Assist. Prof. Dr. Ali Övgün EMU Physics Department www.aovgun.com Electric Field & Magnetic Field Electric forces acting at a distance through electric field. Vector field,
More information13.2 NUCLEAR PHYSICS HW/Study Packet
13.2 NUCLEAR PHYSICS HW/Study Packet Required: READ Tsokos, pp 407-412 SL/HL Supplemental: Cutnell and Johnson, pp 652-652, 970-973 DO Questions pp 412-414 #1,3,11 REMEMBER TO. Work through all of the
More informationSet 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
More informationCertain iron containing materials have been known to attract or repel each other. Compasses align to the magnetic field of earth.
Certain iron containing materials hae been known to attract or repel each other. Compasses align to the magnetic field of earth. Analogous to positie and negatie charges, eery magnet has a north and a
More informationPhysics 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)
More informationHomework (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
More informationChapter 24: Magnetic Fields & Forces Questions & Problems
Chapter 24: Magnetic Fields & Forces Questions & Problems N mv Bwire = Bloop = Bsolenoid = FB = q vbsin α FB = q vb = 2πr 2r L r LII 1 2 Fwire = ILBsinα F parallelwires = = 4π 1 T m/a 2 Example 23.1 A
More informationweek 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
More informationProblem Set 6: Magnetism
University of Alabama Department of Physics and Astronomy PH 10- / LeClair Spring 008 Problem Set 6: Magnetism 1. 10 points. A wire with a weight per unit length of 0.10 N/m is suspended directly above
More informationChapter 19. Magnetism
Chapter 19 Magnetism Magnetic Fields When moving through a magnetic field, a charged particle experiences a magnetic force This force has a maximum value when the charge moves perpendicularly to the magnetic
More informationChapter 27: Magnetic Field and Magnetic Forces
Chapter 27: Magnetic Field and Magnetic Forces Iron ore found near Magnesia Compass needles align N-S: magnetic Poles North (South) Poles attracted to geographic North (South) Like Poles repel, Opposites
More informationPhysics 212 Question Bank III 2010
A negative charge moves south through a magnetic field directed north. The particle will be deflected (A) North. () Up. (C) Down. (D) East. (E) not at all.. A positive charge moves West through a magnetic
More informationGeneral 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
More informationMAGNETIC 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
More informationEarth as a Magnet. The strength and orientation of the earth s magnetic field varies over time and location.
Magnetism Magnetic charges Called poles Two types, North and South Like poles repel each other Opposite poles attract each other Found only in North/South pairs (Dipoles) N S Magnetism Magnetic poles Found
More informationUniversity 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
More information8. (6) Consider the circuit here with resistors R A, R B and R C. Rank the
General Physics II Exam 2 - Chs. 18B 21 - Circuits, Magnetism, EM Induction - Oct. 3, 2013 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results
More information1. (a) On the diagram below, draw the magnetic field pattern around a long straight currentcarrying
1. (a) On the diagram below, draw the magnetic field pattern around a long straight currentcarrying conductor. current-carrying wire The diagram below shows a coil consisting of two loops of wire. The
More informationClass 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:
More informationMagnetic Force Acting on a Current- Carrying Conductor IL B
Magnetic Force Acting on a Current- Carrying Conductor A segment of a current-carrying wire in a magnetic field. The magnetic force exerted on each charge making up the current is qvd and the net force
More informationA) 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
More informationEnd-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
More informationProblem Solving 6: Magnetic Force & Torque
OBJECTIVES MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics Problem Solving 6: Magnetic Force & Torque 1. To look at the behavior of a charged particle in a uniform magnetic field by studying
More informationThis work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License.
University of Rhode Island DigitalCommons@URI PHY 204: Elementary Physics II Physics Course Materials 2015 12. Magnetic Field I Gerhard Müller University of Rhode Island, gmuller@uri.edu Creative Commons
More informationMAGNETIC EFFECTS OF CURRENT AND MAGNETISM
UNIT III MAGNETIC EFFECTS OF CURRENT AND MAGNETISM Weightage 8 Marks Concept of magnetic field and Oersted s experiment Biot-savart law and its application to current carrying circular loop. Ampere s law
More informationMOTION 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
More informationP627/Chem 542 Surface/Interface Science Spring 2013 Rutherford Backscattering Lab: Answers to Questions
Intro Questions: 1) How is a tandem ion accelerator different from a so-called van der Graaf accelerator, and what are some of the advantages (and drawbacks) of the tandem design? A tandem ion accelerator
More informationMAGNETIC EFFECTS OF CURRENT-3
MAGNETIC EFFECTS OF CURRENT-3 [Motion of a charged particle in Magnetic field] Force On a Charged Particle in Magnetic Field If a particle carrying a positie charge q and moing with elocity enters a magnetic
More informationChapter 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
More informationSo, 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
More informationAn electron follows a circular path when it is moving at right angles to. uniform electric and magnetic fields which are perpendicular.
Q1.Which one of the following statements is correct? n electron follows a circular path when it is moving at right angles to D a uniform magnetic field. a uniform electric field. uniform electric and magnetic
More informationa) head-on view b) side view c) side view Use the right hand rule for forces to confirm the direction of the force in each case.
Electromagnetism Magnetic Force on a Wire Magnetic Field around a Bar Magnet Direction of magnetic field lines: the direction that the North pole of a small test compass would point if placed in the field
More informationHW7: 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
More informationElectromagnetism IB 12
Electromagnetism Magnetic Field around a Bar Magnet Direction of magnetic field lines: the direction that the North pole of a small test compass would point if placed in the field (N to S) What is the
More informationA) 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)
More information( )( )( ) Model: The magnetic field is that of a moving charged particle. Visualize: 10 T m/a C m/s sin T. 1.
33.3. Model: The magnetic field is that of a moving charged particle. Visualize: The first point is on the x-axis, with θ a = 90. The second point is on the y-axis, with θ b = 180, and the third point
More information4 pt. (in J) 3.A
Mark Reeves - Physics 22, Fall 2011 1 A point charge of mass 0.0699 kg and charge q = +6.87 µc is suspended by a thread between the vertical parallel plates of a parallel-plate capacitor, as shown in the
More informationChapter 29. Magnetic Fields
Chapter 29 Magnetic Fields Outline 29.1 Magnetic Fields and Forces 29.2 Magnetic Force Acting on a Current-Carrying Conductor 29.4 Motion of a Charged Particle in a Uniform Magnetic Field 29.5 Applications
More informationPhysics for Scientists & Engineers 2
Review Physics for Scientists & Engineers 2 Spring Semester 2005 Lecture 21 The force that a magnetic field exerts on a charge moving with velocity v is given by! F B = q v!! B! The magnitude of the force
More informationCyclotron Motion. We can also work-out the frequency of the cyclotron motion. f cyc =
Cyclotron Motion We can also work-out the frequency of the cyclotron motion f cyc = qb 2πm Neil Alberding (SFU Physics) Physics 121: Optics, Electricity & Magnetism Spring 2010 1 / 1 Cyclotron Motion We
More informationChapter 20. Magnetism
Ch-20-1 Chapter 20 Magnetism Questions 1. A compass needle is not always balanced parallel to the Earth s surface, but one end may dip downward. Explain. 2. Explain why the Earth s north pole is really
More informationFinal 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
More information21 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
More informationDiscussion Question 7A P212, Week 7 RC Circuits
Discussion Question 7A P1, Week 7 RC Circuits The circuit shown initially has the acitor uncharged, and the switch connected to neither terminal. At time t = 0, the switch is thrown to position a. C a
More informationGeneral Physics (PHYC 252) Exam 4
General Physics (PHYC 5) Exam 4 Multiple Choice (6 points). Circle the one best answer for each question. For Questions 1-3, consider a car battery with 1. V emf and internal resistance r of. Ω that is
More informationAdvanced Higher Physics. Electromagnetism
Wallace Hall Academy Physics Department Advanced Higher Physics Electromagnetism Problems AH Physics: Electromagnetism 1 2013 Data Common Physical Quantities QUANTITY SYMBOL VALUE Gravitational acceleration
More informationASSESSMENT UNIT PH5: FIELDS, FORCES AND NUCLEI. A.M. WEDNESDAY, 11 June hours
Candidate Name Centre Number 2 Candidate Number GCE A level 545/0 PHYSICS ASSESSMENT UNIT PH5: FIELDS, FORCES AND NUCLEI A.M. WEDNESDAY, June 2008 2 hours ADDITIONAL MATERIALS In addition to this paper,
More informationPhysics 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
More information