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Find the angle at which the torque is minimum.

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in Electromagnetic Theory by (188k points)
Find the angle at which the torque is minimum.

(a) 30

(b) 45

(c) 60

(d) 90

This question was posed to me during an online exam.

I'm obligated to ask this question of Magnetic Torque topic in division Magnetic Forces and Materials of Electromagnetic Theory

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Right choice is (d) 90

Explanation: The torque of a conductor loop is given by T = BIA cos θ. The torque is minimum refers to zero torque. This is possible only when the angle is 90 or perpendicular.

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