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The charges Q, +q, and +q are placed at the vartices of an equilateral

The charges Q, +q, and +q are placed at the vartices of an equilateral triangle of side l. If the net electrostatic potential energy of the system is zero, the Q is equal to

Options

(a) (+q/2)
(b) zero
(c) (-q/2)
(d) (-q)

Correct Answer:

(-q/2)

Explanation:

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