(Note, the charge on
a capacitor is the charge on the plate with higher potential, equal and
opposite to the charge on the plate with lower potential )
Solution
(a) In the given network, C1, C2 and C3 are connected in series The
effective capacitance C¢ of these three capacitors is given by
1
2
3
1
1
1
1
C
C
C
C
=
+
+
′
For C1 = C2 = C3 = 10 mF,  C¢ = (10/3) mF The network has  C¢ and C4
connected in parallel