A point charge .q. is placed at the centre of an uncharged conuducting shell of inner radius R and outer radius 2R. If the point charge is removed from the centre of the shell, to infinity (without any electric contact with the shell). Work done by electric force is

A point charge .q. is placed at the centre of an uncharged conuducting

1.	A point charge .q. is placed at the centre of an uncharged conuducting shell of inner radius R and outer radius 2R. If the point charge is removed from the centre of the shell, to infinity (without any electric contact with the shell). Work done by electric force is
Answer» `(Q^(2))/(16piin_(0)R)` `(-q^(2))/(10piin_(0)R)` `(3q^(2))/(8piin_(0)R)` `(-3q^(2))/(8piin_(0)R)` ANSWER :B

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A point charge .q. is placed at the centre of an uncharged conuducting shell of inner radius R and outer radius 2R. If the point charge is removed from the centre of the shell, to infinity (without any electric contact with the shell). Work done by electric force is

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