(Answered) What is the net electric potential at the center of a

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What is the net electric potential at the center of a square of sides a = 3 cm.

Q₁ = - 40 nC , Q₂ = - 25 nC , Q₃ = +10 nC , Q₄ = + 20 nC ,

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Hint: V is a scalar quantity and you do not need any vector.

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