A and B are two isolated conductors (that means they are placed at a large distance from each other). When they are joined by a conducting wire :
(i) Find out final charges on A and B ?
(ii) Find out heat produced during the process of flow of charges.
(iii) Find out common potential after joining the conductors by conducting wires ?

Explanation

(i) `Q_(A)' =(3)/(3+b)(6+3)=3 mu C`
`Q_(B)'=(6)/(3+6)(6+3)=6 mu C`
`(ii) DeltaH = (1)/(2).(3mu F.6muF)/((3mu F + 6 mu F)).(2-(1)/(2))^(2)=(1)/(2).(2mu F).((3)/(2))^(2)=(9)/(4) mu J`
(iii) `V_(c)=(3mu C+6mu C)/(3mu F + 6mu F) =1`volt.