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There are two concentric conducting sphe...

There are two concentric conducting spherical shells of radius `r_A` and `r_B` respectively `(r_B= 2r_A)`. If the inner shell is given a charge Q and outer shell is given a charge 2Q, then the potential difference between the surfaces of the shells will be `K=1/(4piepsilon_0)`

A

`kQ/(2r_A)`

B

`kQ/r_A`

C

`kQ/(2r_B)`

D

`kQ/(4r_B)`

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AAKASH INSTITUTE ENGLISH-TEST 1-EXERCISE
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