Question

Two concentric spherical shells of radius `R_(1)` and `R_(2) (R_(2) gt R_(1))` are having uniformly distributed charges `Q_(1)` and `Q_(2)` respectively. Find out total energy of the system.

Answer 1

`U_("total")=U_("self 1")+U_("self 2")+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_(2))`