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The square loop ABCD, carrying a current...

The square loop `ABCD`, carrying a current `i`, is placed in uniform magnetic field `B`, as shown. The loop can rotate about the axis `XX'`. The plane of the loop makes and angle`theta(theta lt 90^(@))` with the direction of `B`. Through what angle will the loop rotate by itself before the torque on it becomes zero

A

`theta`

B

`90^(@)-theta`

C

`90^(@)+theta`

D

`180^(@)-theta`

Text Solution

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The correct Answer is:
C
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