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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

`sqrt(3)(MB)/(2)`

C

`(MB)/(2)`

D

zero.

Text Solution

Verified by Experts

The correct Answer is:
D
Rotation of loop by `30^(@)` about an axis perpendicular to its plane does not change the angle between magnetic moment and magnetic field. Hence, no work is done.
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