100 Figure 30-78 shows a wire that has been bent into a circular arc of radius r = 24.0 cm, centered at O.A straight wire OP can be rotated about O and makes sliding contact with the arc at P. Another straight wire OQ completes the conducting loop. The three wires have cross-sectional area 1.20 mm? and resistivity 1.70 x 10-8 0 - m, and the apparatus lies in a uniform magnetic field of magnitude B = 0.150T directed out of the figure. Wire OP begins from rest at angle e = 0 and has constant angular accelera- tion of 12 rad/s?. As functions of e (in rad), find (a) the loop's resistance and (b) the magnetic flux through the loop. (c) For what O is the induced current maximum and (d) what is that maximum?

100 Figure 30-78 shows a wire that has been bent into a circular arc of radius r = 24.0 cm, centered at O.A straight wire OP can be rotated about O and makes sliding contact with the arc at P. Another straight wire OQ completes the conducting loop. The three wires have cross-sectional area 1.20 mm? and resistivity 1.70 x 10-8 0 - m, and the apparatus lies in a uniform magnetic field of magnitude B = 0.150T directed out of the figure. Wire OP begins from rest at angle e = 0 and has constant angular accelera- tion of 12 rad/s?. As functions of e (in rad), find (a) the loop's resistance and (b) the magnetic flux through the loop. (c) For what O is the induced current maximum and (d) what is that maximum?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

100 Figure 30-78 shows a wire that has been bent into a circular
arc of radius r = 24.0 cm, centered at O.A straight wire OP can be
rotated about O and makes sliding contact with the arc at P.
Another straight wire OQ completes the conducting loop. The
three wires have cross-sectional area 1.20 mm? and resistivity
1.70 x 10-8 0 - m, and the apparatus lies in a uniform magnetic
field of magnitude B = 0.150T directed out of the figure. Wire OP
begins from rest at angle e = 0 and has constant angular accelera-
tion of 12 rad/s?. As functions of e (in rad), find (a) the loop's
resistance and (b) the magnetic flux through the loop. (c) For what
O is the induced current maximum and (d) what is that maximum?

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