5. In the figure below, V = 12 V, C1 = 10 HF, C2 = 20 HF, and C3 = C4 = 30 pF. Assume the voltage source V as been connected for a long time (so all the capacitors are fully charged). (a) What is the equivalent capacitance of the entire circuit? (b) What is the charge on each capacitor if they are fully charged? (c) What is the potential difference across each capacitor if they are fully charged? (d) What is the potential energy stored in each capacitor when they are fully charged