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A spherical conductor A of radius r is p...

A spherical conductor `A` of radius `r` is placed concentrically inside a conducting shell `B` of radius `R(R gt r)`. A charge `Q` is given to `A` , and then `A` is joined to `B` by a metal wire. The charge flowing from `A` to `B` will be

A

`Q((R)/(R + r))`

B

`R((Q)/(R+ r))`

C

Q

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
C
When the two are joined by a metal wire, they become a single conductor. As charge can reside only on the outer surface of a conductor, the entire charge Q must flow to the outer sphere.
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