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A circular current loop of magnetic mome...

A circular current loop of magnetic moment `M` is in an arbitrary orientation in an external magnetic field `vec(B)`. The work done to rotate the loop by `30^(@)` about an axis perpendicular to its plane is `:`

A

MB

B

`sqrt3(MB)/(2)`

C

`(MB)/(2)`

D

`0`

Text Solution

Verified by Experts

The correct Answer is:
D
No work is done to rotate the loop abour an axis perpendicular to its plane as `vecM` is directed along the axis . Work is done only when the plane of the loop rotates .
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