JEE Mains Model Paper 3

Initially, capacitor is like closed switch
So, Req =

1

1 2 + 1 3 + 1 6

Or Req =

6

3+2+1

= 1Ω
and inet =

12V

1Ω

= 12 A
So, I3 =

1

3

× 12A = 4A
Finally, capacitor is like an open switch
so R′eq =

1

1 3 + 1 6

= 6/3 = 2Ω
inet =

12V

2Ω

= 6A and i′3 =

6

9

× 6A = 4A
⇒

i3

i′3

=1