Four point charges Q, q, 2q and 20 are placed, one at each corner of the square The relation between Q and q for which the potential at the centre of the square is zero is (a) Q q (b) Q (d) Q (c) Q q q q Four point charges Q, q, 2q and 20 are placed, one at each corner of the square The relation b...

Four point charges -Q, -q, 2q and 20 are placed, one at each corner of the...

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Physics Principles with Applications

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