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Q12. A capacitor of 100 µF is charged for 5 secs from a 100 volt d.c. supply via a resistor of 100 kn.

(a) Calculate EACH of the following:

(i) The voltage across the capacitor at the end of this period;

(ii) The energy stored in the capacitor at the end of this period.

(b) At the end of this period the capacitor is disconnected and a second capacitor of 100 µF already charged to 70 volts is connected in parallel with it. Calculate EACH of the following:

(i) The final steady state voltage across the pair;

(ii) The energy stored by the pair of capacitors.