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Four point charges, each of +q, are rigi...

Four point charges, each of `+q`, are rigidly fixed at the four corners of a square planar soap film of side ‘a’. The surface tension of the soap film is y. The system of charges and planar film are in equilibrium, and a `=k(q^2//gamma)^(1//N)`. where k is a constant . Then N is ....

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