> Q. An LCR circuit contains resistance of $110 Omega$ and a supply of $220 V$ at $300 rad / s$ angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by $45^{circ} .$ If on the other hand, only inductor is removed the current leads by $45^{circ}$ with the applied voltage. The $rms$ current flowing in the circuit will be : – LIVE ANSWER TODAY

Q. An LCR circuit contains resistance of $110 Omega$ and a supply of $220 V$ at $300 rad / s$ angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by $45^{circ} .$ If on the other hand, only inductor is removed the current leads by $45^{circ}$ with the applied voltage. The $rms$ current flowing in the circuit will be :

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An LCR circuit contains resistance of $110 Omega$
and a supply of $220 V$ at $300 rad / s$ angular
frequency. If only capacitance is removed from
the circuit, current lags behind the voltage by
$45^{circ} .$ If on the other hand, only inductor is
removed the current leads by $45^{circ}$ with the
applied voltage. The $rms$ current flowing in the circuit will be :

Solution:

$tan 45^{circ}=frac{1}{omega C R}=frac{omega L}{R} $

$Rightarrow X_{L}=X_{C}$

$Rightarrow$ resonance

$i =frac{ V }{ R }$

$=frac{220}{110}=2 A$

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