In Fig, each capacitance C1 is 6.9 µF, and each capacitance C2 is 4.6 µF.
(a) Compute the equivalent capacitance of the network between points a and b.
(b) Compute the charge on each of the three capacitors nearest a and b when Vab = 420V.
(c) With 420V across a and b, compute Vcd.