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Two concentric and coplanar circular coi...

Two concentric and coplanar circular coils have radii a and b` (gt gt a)` as shown in the figure. 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

`((2mu_0i)/(pib))a^2/R`

B

`((2mu_0i)/(b))(pia^2)/R`

C

`((mu_0i)/(b))(pia^2)/R`

D

`((mu_0i)/(2b))(pia^2)/R`

Text Solution

Verified by Experts

The correct Answer is:
D
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