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Four electric charges +q, +q, -q and -q ...

Four electric charges `+q, +q, -q` and `-q` are placed at the corners of a square of side 2L (see figure). The electric potential at point `A`, mid-way between the two charges `+q` and `+q`, is

A

zero

B

`(1)/(4 pi epsilon_(0)) (2q)/(L) ( 1 + sqrt(5))`

C

`(1)/(4 pi epsilon_(0)) (2q)/(L) (1 + (1)/(sqrt(5)))`

D

`(1)/(4 pi epsilon_(0)) (2q)/(L) (1 - (1)/(sqrt(5)))`

Text Solution

Verified by Experts

The correct Answer is:
D
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