CGPET 2017 Solved Paper

To get the equivalent capacitance 6µF. The capacitor are arranged in the following manner.
C1 and C2 capacitor are joined into the series Combination.
Hence,

1

Ceq

=

1

C1

+

1

C2

1

Ceq

=

1

4

+

1

4

1

Ceq

=

1+1

4

Ceq=

4

2

=2µF
Ceq and C3 capacitor are joined into the parallel combination
Hence, Ceq′=Ceq+C3
=2+4=6µF