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A coil of 100 turns, radius 5cm carries ...

A coil of 100 turns, radius 5cm carries a current of 0.1A. It is placed in a magnetic field of 1.5T initially with its plane perpendicular to the field. The work done to rotate it through on angle of `180^@ ` is... `xx 10^(-3) 'J`

A

`25 pi`

B

`50 pi`

C

`75 pi`

D

`20 pi`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MOVING CHANGES & MEGNETISM)
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