A series RC circuit consists of a 22 ?F capacitor in series with a 330 ? resistor across a pulsating dc source (VS) with a 90-V peak (Vpk). VC = 56.9 V after one time constant. What is VC after an additional time constant?

A) 77.9 V B) 56.9 V C) 79.7 V D) 86.5 V


A

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