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A charge q is spread uniformly over an i...

A charge q is spread uniformly over an isolated ring of radius 'R'. The ring is rotated about its natural axis and has magnetic dipole moment of the ring as M. Angular velocity of rotation is

A

`(M)/(2qR^(2))`

B

`M/(qR)^(2)`

C

`(2M)/(qR^(2))`

D

`(qM)/(2R)`

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The correct Answer is:
C
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