First slide

AC Circuits

Question

In the circuit given below, what will be the reading of the voltmeter

Moderate

A

300 V
B

900 V
C

200 V
D

400 V

Solution

$V^{2} = V_{R}^{2} + {(V_{L} - V_{C})}^{2}$
Since $V_{L} = V_{C}$ hence $V = V_{R} = 200 V$

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