ElectrostaticsHard

Question

Four point charges -Q, -q, 2q and 2Q are placed, one at each corner of the square. The relationbetween Q and q for which the potential at the centre of the square is zero is

Options

A.
B.Q = - q
C.
D.Q = q

Solution

             

⇒ Q + q = 0
⇒ Q = - q

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