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A solid conducting sphere, having a char...

A solid conducting sphere, having a charge `Q`, is surrounded by an unchanged conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be `V`. If the shell is now given a change of `-4Q`, the new potential difference between the same tow surface is :

A

`V`

B

`2V`

C

`4V`

D

`-2V`

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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
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