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Concentric metallic hollow spheres of ra...

Concentric metallic hollow spheres of radii R and 4R hold charges `Q_1 and Q_2` respectively. Given that surface charge densities of the concentric spheres are equal, the potential difference `V(R)- V(4R)` is :

A

`(3Q_2)/(4piepsi_0R)`

B

`(3Q_1)/(16piepsi_0 R)`

C

`(Q_2)/(4pi epsi_0 R)`

D

`(3Q_1)/(4pi epsi_0 R)`

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