MHTCET 2016 Physics Solved Paper

(b) When dieletric is not inserted:-

When dielectric is inserted in one of the capacitor,

Given V1+V2 = V
The capacitance of first capacitor becomes kC, so by charge conservation,
(kC)V1=CV2 .......(ii)

V1

V2

=

1

K

⇒

V1+V2

V2

=

1+K

K

⇒ V2=(

KV

1+K

) (∵V1+V2=V)