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Charge q is uniformly spread on thin rin...

Charge q is uniformly spread on thin ring of radius R. The ring rotates about its axis with a uniform frequency f Hz. The magnitude of magnetic induction at the centre of the ring is

A

`(mu_(0)qf)/(2piR)`

B

`(mu_(0)q)/(2pi f R )`

C

`(mu_(0)q)/(2 fR)`

D

`(mu _(0) qf )/(2R)`

Text Solution

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The correct Answer is:
D
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