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There are two concentric spherical shell...

There are two concentric spherical shell of radii r and `2r`. Initially, a charge Q is given to the inner shell and both the switches are open.

If switch `S_1` is closed and then opened, charge on the outer shell will be

A

Q

B

`Q//2`

C

`-Q`

D

`-Q//2`

Text Solution

Verified by Experts

The correct Answer is:
C
`V_(outer)=0`
`:. (kQ)/(2r)+(kQ_1)/(2r)=0`
`:. Q_1=-Q=` charge on outer shell.
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