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Three charges Q, +q and +q are placed at the vertices of an equilateral triangle of side `l` as shown in the figure. It the net electrostatic energy of the system is zero, then Q is
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Mar 20, 2022
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Three charges Q, +q and +q are placed at the vertices of an equilateral triangle of side `l` as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal
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(a) –q (b) +q (c) Zero (d) `–q/ 2`
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