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Two concentric and coplanar coils have r...

Two concentric and coplanar coils have radii a and `b ( gt gt a)` as shows in Fig. Resistance of the inner coil is `R`. Current in the outer coil is increased from `0` to `i`, then the total charge circulating the inner coil is

A

`(mu_(0)ia^(2))/(2Rb)`

B

`(mu_(0)ib)/(2R)`

C

`(mu_(0)i)/(2a) (pib^(2))/(R)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
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