A 20-μF capacitor is charged to 200 V and is then connected across a 1000-Ω resistor. The time constant for this circuit is approximately

Name: A 20-μF capacitor is charged to 200 V and is then connected across a 1000-Ω resistor. The time constant for this circuit is approximately
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The time constant (τ) for an RC circuit is given by τ = R * C. Here, R = 1000 Ω and C = 20 μF = 20 x 10^-6 F. So, τ = 1000 * 20 x 10^-6 = 20 x 10^-3 seconds = 20 ms.

A 20-μF Capacitor Is Charged to 200 V and Is