A circular current loop is placed in an external magnetic field. How is the torque related to the radius of the loop?
a. directly proportional to radius squared
b. directly proportional to radius
c. inversely proportional to radius squared
d. inversely proportional to radius
A
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What is the direction of 
in the wave as it passes P?
A. A B. B C. C D. D E. Toward the viewer. F. Away from the viewer. T. The vector is zero. G. AA H. BB I. CC J. DD
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A. 54.0 V B. 120 V C. 150 V D. 533 V E. 170 V
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