Four charges +q, +q, −q and –q respectively are placed at the corners A, B, C and D of a square of side a. The electric potential at the centre O of the square is
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Correct option = (d) that is ZERO
Given in the question :-
a = side of square
r = distance of each corner of square from center O
Now for finding electric potential at the center
We know that the formula for calculating electric potential is V = kq/r
V₀= kq/r + kq/r + k (-q)/r + k(-q)/r
V₀ = 2kq/r - 2kq/r
V₀ = 0
Hence option d is correct , electric potential at centre is ZERO .
Hope it Helps :-)
Given in the question :-
a = side of square
r = distance of each corner of square from center O
Now for finding electric potential at the center
We know that the formula for calculating electric potential is V = kq/r
V₀= kq/r + kq/r + k (-q)/r + k(-q)/r
V₀ = 2kq/r - 2kq/r
V₀ = 0
Hence option d is correct , electric potential at centre is ZERO .
Hope it Helps :-)
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