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Two spherical conductors A and B of radi...

Two spherical conductors A and B of radii a and b (`b gt a`) are placed concentrically in air. A is given charged +Q while B is earthed. Then the equivalent capacitance of the system is

A

`4pi epsilon_(0)(ab)/(b-a)`

B

`4piepsilon_(0)(b+a)`

C

`4piepsilon_(0)b`

D

`(4piepsilon_(0)b^(2))/(b-a)`

Text Solution

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The correct Answer is:
A
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