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A ring of radius 0.1m is made out of thi...

A ring of radius 0.1m is made out of thin metallic wire of area of cross section `10^(-6)m^(2)`. The ring has a uniform charge of `pi` coulombs. Find the change in the radius of the rig when a charge of `10^(-8)C` is placed at the center of the ring. Young's modulus of hte metal is `2xx10^(11)Nm^(-2)`.

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