Answer
(b) $90^{\circ}$
Work Step by Step
The torque T = $IABsin\theta$
Clearly, the torque will be maximum when $sin\theta$ is maximum i.e. $\theta=90^{\circ}$
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Chapter 19 - Magnetism - Learning Path Questions and Exercises - Exercises - Page 688: 16
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