Question

In the circuit of the figure below, the switch S has been open for a long time. It is then suddenly closed. Take ε = 10.0 V,R₁ = 40.0 kΩ, R₂ = 200 kΩ, and C = 13.0 μF.

(a) Determine the time constant before the switch is closed.


(b) Determine the time constant after the switch is closed.


(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 s. Do not enter units in your expression. Use the following as necessary: t.)

Answer 1