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RC Circuits - Engineering

Q1:

In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is

A 3 V

B 27 V

C 19.2 V

D 1.9 V

ANS:C - 19.2 V

Vrms = (V1+V2)/1.404.
= (12+15)/1.404.
= 27/1.404 = 19.23 Answer.