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)]

A spherical shell of radius R_(1) with uniformly distributed charge q

1.	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)]
Answer» ANSWER :`(Q(q_(0)+q//2))/(4piepsilon_(0))((1)/(R_(1))-(1)/(R_(2)))`

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