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A circular current loop of magnetic mom...

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))/(2)MB`

C

`(MB)/(2)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
The orientation of the loop does not change due to this `30^(@)` rotation .
`therefore " " W=0`
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