In the circuit shown, the switch indicated is open for a very long time, and then closed at t=0. When the switch moves, there is a transient response in the capacitor voltage (indicated on the diagram as v). The component values are R1 = 1.9 k0, R2 = 3.8 k0, R3 = 3.8 k0, C = 20 nF, Vs = 1 V. Find the time constant associated with the indicated voltage v after t>0. Answer to within 1% precision. VS T = 2 notewor O 30.0800:00- R1 Ω www ms R2 Ω + CF www. R3 Ω

3. For the circuit, (i) Find the voltage vc and the current ic if the capacitor was initially uncharged and the switch is thrown into position A. (ii) Find the voltage vc and the current ic if the switch is thrown into position B. (iii) Plot the waveforms for the questions (i) and (ii) for both the voltage vc and the current ic. Mark the time constant for part (i) and part (ii) in the waveforms with the corresponding values for current and voltage. A ww ic 20 kΩ B + + 12 V Vc. R, •10 kΩ 0.05 μF

A charged capacitor of C-46.0 µF is connected to a resistor of R-2.8 M2 as shown in the figure. The switch S is closed at time 1-0. Find the time (in seconde) sakes the current to fall to 0.25 of its initial value. R www

All capacitors were initially discharged.at t = 0, S1 is placed at position 1 and S2 is closed.At t = 15 ms, S1 is placed at position 2 and S2 is kept closed. At t = 25 ms, S1 is kept at position 2 and S2 is opened.after 25 ms, the voltage vT will Question options: increase until it reaches the battery voltage at steady state exponentially decay to zero stay constant be a sine wave

Theoretically obtain the expression of the voltage across the capacitor from the Experiment when the circuit is stimulated with a 5 V direct current voltage source. Assume that initially the capacitor is fully unloaded (null initial conditions). Graph the waveform obtained.