In the circuit of the figure below, the switch 5 has been open for a long time. It is then suddenly closed. Take 8 = 10.0 V, R1 = 51.0 k0, R2 = 130 k0, and C = 15.0 uF. Rl . l 8 C S R2 6) (a) Determine the time constant before the switch is closed. 2.71 J s (b) Determine the time constant after the switch is closed. 1.95 J s (c) Let the switch be closed at t = 0. Determine the current in the switch as a function of time. (Assume I is in A and t is in 5. Do not enter units in your expression. Use the following as necessary: t.) 1: 196+ (76.9)e(1;';5)