What is output voltage at the end of the input pulse to an RL integrator if the resistance is 22 kΩ, the inductor is 2 H and the input is a 12 V, 0.0909 ms pulse?
A)11.4 V
B)11.8 V
C)10.4 V
D)7.59 V

Question

Quizplus · Accepted Answer

The time constant (τ) for an RL circuit is L/R = 2/22000 = 0.0000909 s. Since the pulse width is equal to the time constant, the output voltage at the end of the pulse is approximately 63.2% of the input voltage, which is 0.632 * 12 V = 7.584 V, approximately 7.59 V.

What Is Output Voltage at the End of the Input