5. A uniform external magnetic field, created by something you don't see here, points upward, in the plane of the paper as shown below (this is different from the field created by the wire). The wire is perpendicular to the paper, represented by the empty circle. When the wire carries current, there is a NET MAGNETIC FIELD AT POINT 2 OF ZERO. a. B 109 What is the direction of the current in the wire? Justify. b. C. Point 1 is the same distance from the wire as point 2. Use a vector addition diagram to draw the net magnetic field vector at point 1. Point 3 is twice as far from the wire as point 2. Use a vector addition diagram to determine the net magnetic field at point 3. It will help to draw the vector sizes proportional to their magnitude.

5. A uniform external magnetic field, created by something you don't see here, points upward, in the plane of the paper as shown below (this is different from the field created by the wire). The wire is perpendicular to the paper, represented by the empty circle. When the wire carries current, there is a NET MAGNETIC FIELD AT POINT 2 OF ZERO. a. B 109 What is the direction of the current in the wire? Justify. b. C. Point 1 is the same distance from the wire as point 2. Use a vector addition diagram to draw the net magnetic field vector at point 1. Point 3 is twice as far from the wire as point 2. Use a vector addition diagram to determine the net magnetic field at point 3. It will help to draw the vector sizes proportional to their magnitude.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter22: Magnetism

Section: Chapter Questions

Problem 18PE: An electron in a TV CRT moves with a speed at 6.00107m/s, in a direction perpendicular to the...

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A 0.50-kg copper sheet drops through a uniform horizontal magnetic field of 1.5 T, and it reaches a terminal velocity of 2.0 m's. (a) What is the net map,-, eh: force on the sheet after it reaches terminal velocity? (b) Describe the mechanism responsible for this force, (c) How much power is dissipated as Joule heating while the sheet moves at terminal velocity?
(a) A physicist performing a sensitive measurement wants to limit the magnetic force on a moving charge in her equipment to less than 1.001012N. What is the greatest the charge can be if it moves at a maximum speed of 30.0 m/s in Earth's field? (b) Discuss whether it would be difficult to limit the charge to less than the value found in (a) by comparing it with typical static electricity' and noting that static is often absent,
(a) An oxygen16 ion with a mass at 2.661026kg travels at 5.00106m/s perpendicular to a 1.20T magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the radio of this charge to the charge of an electron? (c) Discuss why the radio found in (b) should be an integer.
(a)What is the angle between a wire carrying an 8.00-A current and the 1.20-T field It Is in if 50.0 cm of the wire experiences a magnetic force of 2.40 N? (b) What is the force on the wire If It Is rotated to make an angle of 90° with the field?
(a) A 0.750-m-long section of cable carrying current to a car starter motor makes an angle at 60° with the Earth’s 5.00105-T field. What is the current when the wire experiences a force of 7.00103N ? (b) If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.75T field, what force is exerted on this segment of wire?
A uniform magnetic field of magnitude is directed parallel to the z-axis. A proton enters the field with a velocity v=(4j+3k)106m/s and travels in a helical path with a radius of 5.0 cm. (a) What is the value of B? (b) What is the time required for one trip around the helix? (c) Where is the proton 5.0107s after entering the field?
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Review A proton is accelerated from rest through a 5.00-V potential difference. a. What is the protons speed after it has been accelerated? b. What is the maximum magnetic field that this proton produces at a point that is 1.00 m from the proton?
(a) A cosmic ray proton moving toward the Earth at 5.00107m/s experiences a magnetic force of 1.701016N. What is the strength of the magnetic field it there is a 45° angle between it and the proton’s velocity? (b) Is the value obtained in part (a) consistent with the known strength of the Earth’s magnetic field on its surface? Discuss.
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