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  4. An LCR series circuit is connected to an oscillator (AC supply) having RMS voltage 200 V . If the RMS voltages across resistor, inductor and capacitor are equal, then RMS voltage across the resistor would be

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Q. An LCR series circuit is connected to an oscillator (AC supply) having RMS voltage $200 \, V$ . If the RMS voltages across resistor, inductor and capacitor are equal, then RMS voltage across the resistor would be

NTA AbhyasNTA Abhyas 2020

Solution:

$\because \, \, V=\sqrt{\left(V_{R}\right)^{2} + \left(V_{L} - V_{C}\right)^{2}}=V_{R}\left(\because V_{L} = V_{C}\right)$
$V_{R}=V=200 \, volt$