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In the circuit of Figure P27.25, the switch S has been open for a long time. It is then suddenly closed. Take ε = 10.0 V, R1 = 50.0 kΩ, R2 = 100 kΩ, and C = 10.0 μF. Determine the time constant (a) before the switch is closed and (b) 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.
Figure P27.25 Problems 25 and 26.
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