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4 point - charges each +q is placed on t...

4 point - charges each `+q` is placed on the circumference of a circle of diameter 2d in such a way that they form a square. The potential at the centre is proportional to

A

0

B

`(4d)/(q)`

C

`(q)/(4d)`

D

`(4q)/(d)`

Text Solution

Verified by Experts

The correct Answer is:
D
Potential at the centre = `(1)/(4piepsilon_(0))(Sigmaq)/(r)=9xx10^(9)xx(4q)/(d)`
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