Two non-conduction hollow uniformly charged spheres of radil `R_(1)` and `R_(2)` with charge `Q_(1)` and `Q_(2)` respectively are places at a distance r. Find out total energy of the system.

Explanation

`U_("total")=U_("self")+U_("Interaction")=Q_(1)^(2)/(8piepsi_(0) R_(1))+Q_(2)^(2)/(8pi epsi_(0) R_(2))+(Q_(1)Q_(2))/(4pi epsi_(0) r)`