RC Circuits - Technical MCQs

Q1:

In a 20 Vac series RC circuit, if 20 V is read across the resistor and 40 V is measured across the capacitor, the applied voltage is

A 45 Vac

B 50 Vac

C 60 Vac

D 65 Vac

ANS:A - 45 Vac

From phasor addition, we get that;

VT= √(40^2+20^2) = 44.72V.