In the circuit shown the capacitor is initially uncharged. The switch is closed at time t=0 s. Is given that: R=1.0 MQ, C=3.6 F and =20 V & C (a) R (a) Calculate the time constant of the circuit (4p) (b) What is the current value immediately after the switch is closed? (4p) (c) Calculate the current after the switch has been closed for 0.8 seconds. (6p) (d) Calculate the charge on the capacitor when it is fully charged. (3p) (e) What is the value of the current when the capacitor is fully charged? (3p)