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Q2) A capacitor of 100  is charged from a 120 V supply via a 100  resistor for 4 seconds.

(a) Calculate EACH of the following:

(i) the time constant of the circuit; (2)

(ii) the voltage to which the capacitor has charged after 4 seconds. (4)

(b) A second capacitor of 80  is now charged for 4 seconds from the same supply via the same 100  resistor. Both charged capacitors are now disconnected from the supply and then connected in parallel.

Calculate EACH of the following:

(i) the final steady state voltage across the pair of capacitors; (8)

(ii) the total energy stored in the two capacitors. (2)