List of top Physics Questions on LCR Circuit asked in MHT CET

What is the unit of the \(L/R\) ratio?
What is the unit of the ratio \(L/R\) where \(L\) is inductance and \(R\) is resistance?
What is the power factor of an AC circuit containing only a pure resistor?
In an AC circuit, what is the power factor of a pure resistor?
An inductor of ((\frac{100}{\pi}) mH), capacitor of capacitance ((\frac{10^{-3}}{2\pi}) F) and resistance of (10 \Omega) are connected in series with an AC voltage source of (110 V), (50 Hz) supply. The tangent of the phase angle ' (\phi) ' between voltage and current is
Two inductors of \(80 \text{ mH}\) each are joined in parallel. If the current is \(2.1 \text{ A}\), the energy stored in the combination is
The value of alternating e.m.f. (\(E\)) in the given circuit is
In an \(LC\) circuit, angular frequency at resonance is \(\omega\). The new angular frequency when inductance is made four times and capacitance is made eight times is
A $20\Omega$ resistance, $10\text{ mH}$ inductance coil and $15\mu\text{F}$ capacitor are joined in series. When a suitable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is made $\frac{1}{3}\text{rd}$, the resonant frequency}
An a.c. e.m.f. of peak value $230\text{ V}$ and frequency $50\text{ Hz}$ is connected to a circuit with $R = 11.5\Omega, L = 2.5\text{H}$ and a capacitor all in series. The value of capacitance is ' $C$ ' for the current in the circuit to be maximum. The value of ' $C$ ' and maximum current are respectively ($\pi^2 = 10$ )}
An inductor of ((\frac{100}{\pi}) mH), capacitor of capacitance ((\frac{10^{-3}}{2\pi}) F) and resistance of (10 \Omega) are connected in series with an AC voltage source of (110 V), (50 Hz) supply. The tangent of the phase angle ' (\phi) ' between voltage and current is
Two inductors of \(80 \text{ mH}\) each are joined in parallel. If the current is \(2.1 \text{ A}\), the energy stored in the combination is
In an \(LC\) circuit, angular frequency at resonance is \(\omega\). The new angular frequency when inductance is made four times and capacitance is made eight times is
The value of alternating e.m.f. (\(E\)) in the given circuit is

An inductor of \( \frac{100}{\pi} \,\text{mH} \), a capacitor of capacitance \( \frac{10^{-3}}{2\pi} \,\text{F} \), and a resistance of \( 10\,\Omega \) are connected in series with an AC voltage source of \( 110\,\text{V} \), \( 50\,\text{Hz} \) supply. The tangent of the phase angle \( \phi \) between voltage and current is ______. 

Two inductors of \(80 \text{ mH}\) each are joined in parallel. If the current is \(2.1 \text{ A}\), the energy stored in the combination is
The value of alternating e.m.f. (\(E\)) in the given circuit is
In an \(LC\) circuit, angular frequency at resonance is \(\omega\). The new angular frequency when inductance is made four times and capacitance is made eight times is
In an LC circuit, the inductance \( L \) is 2 H and the capacitance \( C \) is 4 μF. What is the frequency of oscillation of the circuit?
In an oscillating LC circuit, the maximum charge on the capacitor is ' \(Q\) '. When the energy is stored equally between the electric and magnetic fields, the instantaneous charge on the capacitor ' \(q\) ' is
An alternating current is given by $I = 100 \sin(50\pi t)$. How many times will the current become zero in one second?
In the series LCR circuit shown in figure, the impedance is

A resistor of \( 400\,\Omega \) and an inductance of \( 0.4\,\text{H} \) are in series with an a.c. source of e.m.f. \( E = 200\sqrt{2}\sin(1000t) \). The power factor of the circuit is
The power factor of an R-L circuit is $\frac{1}{\sqrt{2}}$. If the frequency of AC is doubled the power factor will now be
In an AC circuit, the current is $i=5 \sin(100t - \frac{\pi}{2})$ A and voltage is $e=200 \sin(100t)$ volt. Power consumption in the circuit is ($\cos 90^{\circ}=0$)