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The expression for the torque acting on ...

The expression for the torque acting on a coil having area of crosssection `A`, number of turns `n`, placed in a magnetic field of strength `B`, making an angle `theta` with the normal to the plane of the coil, when a current `i` is flowing in it, will be

A

`ni AB tan theta`

B

`ni AB cos theta`

C

`ni AB sin theta`

D

`ni AB`

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The correct Answer is:
C
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