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Two concentric spherical shells of radiu...

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.

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