First slide

Electrical Resonance series circuit

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

${V^2} = V_R^2 + {({V_L} - {V_C})^2}$
$\operatorname{Sin} ce\,\,{V_L} = {V_C}\,\,hence\,\,V = {V_R} = 200V$

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