In Fig. 22-10, assume the capacitor, C, is fully charged to 50 V with the switch, S1, in position 2. If S1 is now moved to position 1, how long will it take the capacitor voltage, VC, to decrease to...

In Fig. 22-10, assume the capacitor, C, is fully charged to 50 V with the switch, S1, in position 2. If S1 is now moved to position 1, how long will it take the capacitor voltage, VC, to decrease to (a) 40 V, (b) 30 V, (c) 20 V, (d) 15 V, and (e) 10 V?