Question

Four +10 µC point charges are at the corners of a square of side 11 m....

Four +10 µC point charges are at the corners of a square of side 11 m. Find the potential at the center of the square (relative to zero potential at infinity) for each of the following conditions.

(a) All the charges are positive
kV

(b) Three of the charges are positive and one is negative
kV

(c) Two are positive and two are negative
kV

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