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A charge .q. is distrubuted over two c...

A charge .q. is distrubuted over two concertric hollow conducting sphere of radii r and R `(lt r)` such that their surface charge densite are equal. The potential at their common centre is

A

zero

B

`(q)/(4 pi in_0 ) ( (r+R ))/((r^2 +R^2)^2)`

C

`(q)/(4 pi in_0 ) [(1)/(r ) +(1)/(R ) ]`

D

`(q )/(4 pi in_0 ) [(r+R )/( (r^2 +R^2))]`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
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