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 = 54.0 kN, R2 = 180 k 2, and C = 12.0 μF.


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 = 54.0 kN, R2 = 180 k 2, and C = 12.0 μF.

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(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.)

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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 = 54.0 kN, R2 = 180 k 2, and C = 12.0 μF.
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