Capacitance of sphere- 1 C1=4πε0R Capacitance of sphere-2 C2=4πε0(3R) C2=12πε0R We know after connection, charge flows from sphere-1 to sphere- 2 till both acquired same potential. If q1′ and q2′ be charges on sphere-1 and sphere- 2 respectively after connection, then
q1′
q2′
=
C1′V
C2V
(where, V= commón potential) ⇒
q1′
q2′
=
C1
C2
...(i) The ratio of charge densities of sphere- 1 and sphere- 2 after connection is given as