Question

If a charge – 150 nC is given to a concentric spherical shell
and a charge +50 nC is placed at its centre then the charge
on inner and outer surface of the shell is
(a) –50 nC, –100 nC (b) +50 nC, –200 nC
(c) –50 nC, –200 nC (d) 50 nC, 100 nC

Answer 1

Answer:

(c) –50 nC, –200

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Answer 2

Explanation:

Central  charge is passed to the Inner surface

Inner = +50nC

By induction , this +50nC makes extra charge of -50nC to the outer surface

Outer  = -200nC