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Two thin wire rings each having a radius...

Two thin wire rings each having a radius R are placed at a distance d apart with their axes coiciding. The charges on the two rings are `+q` and `-q`. The potential difference between the centres of the two rings is

A

Zero

B

`Q/(4piin_(0))[1/R-1/(sqrt(R^(2)+d^(2)))]`

C

`QR//4piin_(0)d^(2)`

D

`Q/(2piin_(0))[1/R-1/(sqrt(R^(2)+d^(2)))]`

Text Solution

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