Question: A charge q is distributed uniformly over the volume of a ball of radius R. Assuming the permittivity to be equal to unity, find: (a)

A charge q is distributed uniformly over the volume of a ball of radius R. Assuming the permittivity to be equal to unity, find:
(a) The electrostatic self-energy of the ball;
(b) The ratio of the energy W1 stored in the ball to the energy W pervading the surrounding space.

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