A spherical shell of radius `R_(1)` with uniformly distributed charge q has a point charge `q_(0)` at its centre. Find the work performed by the elect

Monjur Alahi

A spherical shell of radius `R_(1)` with uniformly distributed charge q has a point charge `q_(0)` at its centre. Find the work performed by the electric forces during the expansion of the shell from `R_(1)` to `R_(2)`.
[Hint: W=`W_(1)`(decrease in self potential energy)`+W_(2)`(work done by electrical force of `q_(0)` on q)]


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Correct Answer - `(q(q_(0)+q//2))/(4piepsilon_(0))((1)/(R_(1))-(1)/(R_(2)))`

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