vo coplanar and concentric circular loops of wire carry curre et r, = 12.0 cm and r, = 8.50 cm. (Assume the positive dim owards you) and assume the positive vertical direction is to

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter22: Magnetic Forces And Magnetic Fields
Section: Chapter Questions
Problem 51P
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Two coplanar and concentric circular loops of wire carry currents of I, = 6.10 A and I, = 2.10 A in opposite directions as in the figure below.
Let r, = 12.0 cm and r, = 8.50 cm. (Assume the positive direction along the axis perpendicular to the faces of the loops is out of the screen
(towards you) and assume the positive vertical direction is toward the top of the screen.)
(a) What is the magnitude of the net magnetic field (in pT) at the center of the two loops?
1.64E-5
Recall that the magnetic field at the center of a circular current loop of radius R and carrying current I is B = "o. Use this
2R
relationship for both loops, and apply the right-hand rule to determine the directions of the field due to each loop. µT
(b) What is the direction of the net magnetic field at the center of the two loops?
out of the screen
into the screen
toward the top of the screen
toward the bottom of the screen
(c) Let r, remain fixed at 12.0 cm and let r, be a variable. Determine the value of r, (in cm) such that the net field at the center of the
loops is zero.
| 4.13
cm
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Transcribed Image Text:Two coplanar and concentric circular loops of wire carry currents of I, = 6.10 A and I, = 2.10 A in opposite directions as in the figure below. Let r, = 12.0 cm and r, = 8.50 cm. (Assume the positive direction along the axis perpendicular to the faces of the loops is out of the screen (towards you) and assume the positive vertical direction is toward the top of the screen.) (a) What is the magnitude of the net magnetic field (in pT) at the center of the two loops? 1.64E-5 Recall that the magnetic field at the center of a circular current loop of radius R and carrying current I is B = "o. Use this 2R relationship for both loops, and apply the right-hand rule to determine the directions of the field due to each loop. µT (b) What is the direction of the net magnetic field at the center of the two loops? out of the screen into the screen toward the top of the screen toward the bottom of the screen (c) Let r, remain fixed at 12.0 cm and let r, be a variable. Determine the value of r, (in cm) such that the net field at the center of the loops is zero. | 4.13 cm Need Help? Read It
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