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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 coinciding. 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/(4piepsilon_0)[1/R-1/(sqrt(R^2+d^2))]`

C

`(qR)/(4piepsilon_0d^2)`

D

`q/(2piepsilon_0)[1/R-1/(sqrt(R^2+d^2))]`

Text Solution

Verified by Experts

The correct Answer is:
D
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