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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

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

C

`Q`

D

Zero

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