Consider the Circuit below. Let C = 12.0 muF, R1 = 240 ohm, R2 = 180 ohm, R3 = 65.0 ohm, and e = 20.0 V.
a. Calculate the current supplied by the battery immediately after the switch is closed.
b. Calculate the current supplied by the battery a very long time after the switch has been closed.
c. Calculate the energy stored in the capacitor a very long time after the switch has been closed.
d. The switch remains closed for a long time. The switch is then opened. How long until the capacitor discharges to 25% of the maximum charge?