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, midway between the two charges +q

Question:

Options :

(a) zero
(b) 1/4πε0 x 2q/L (y+√5)
(c) 1/4πε0 x 2q/L (1+1/√5)
(d) 1/4πε0 x 2q/L (1-1/√5)

Answer :

(d) 1/4πε₀ x 2q/L (1-1/√5)

Answer Steps :

step 1

step 2

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