1.

Two concentric spherical conducting shells of radii r and R (r lt R ) carry charges q and Q respectively . The two shells are now connected by a conducting wire. The final charge on the inner shell is

Answer»

ZERO
`((Q+q)R)/( R)`
`((Q-q)r)/( R)`
`(qr)/( R)`

Solution :Answer (1)
The net charge resides on the outer surface of the arrangement . Charge on inner surface is equal to zero. Due to FOLLOWING two reasons.
(i) As electric field inside the conductor is zero . Hence there cannot be any net charge inside the conductor.
(ii) MUTUAL repulsion.


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