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MHT CET 2026 Physics question

PhysicsElectrostatic Potential and CapacitanceMHT CET 2026

Three point charges +q, +2q and +Q are placed at the vertices of an equilateral triangle. If the potential energy of the system of three charges is zero, the value of Q in terms of q is

Answer: (B)

Solution

Let the side of the triangle be . The potential energy of the system is the sum over the three pairs: . Setting : , so and ,

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Question ID VK-099936