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 potential

(i) at point (ii) at surface of smaller shell (i.e. at point B)
(iii) at surface of larger shell (i.e. at point C) (iv) at `r le R_(1)`
(v) at `R_(1) le r le R_(2)` (vi) at `r ge R_(2)`

Explanation

Using the results of hollow sphere as given in the table 7.4.
(i) `V_(A)=(KQ_(1))/R_(1)+(KQ_(2))/R_(2)` (ii) `V_(B)=(KQ_(1))/R_(1)+(KQ_(2))/R_(2)`
(iii) `V_(C)=(KQ_(1))/R_(2)+(KQ_(2))/R_(2)` (iv) for `r le R_(1), V=(KQ_(1))/R_(1)+(KQ_(2))/R_(2)`
(v) for `R_(1) le r le R_(2), V =(KQ_(1))/r+(KQ_(2))/R_(2)` (vi) for `r ge R_(2), V=(KQ_(1))/r+ (KQ_(2))/r`