Series LR Circuit - Practice Questions & MCQ

The given phasor diagram represent which electrical circuit

Calculate the Reactance in given circuit

Calculate the susceptance (S) in given circuit

The plot of inductive reactance & frequency of source is

 An LCR circuit is equivalent to a damped pendulum. In an LCR circuit, the capacitor is charged to Q₀ and then connected to the L and R as shown below :

If a student plots graphs of the square of maximum charge ( Q²_Max ) on the capacitor with time(t) for two different values L₁ and L₂ (L ₁>L₂) of L then which of the following represents this graph correctly? (plots are schematic and not drawn to scale)

The power factor of an AC circuit having resistance (R) and inductance (L) connected in series and an angular velocity $\omega$ is :

An inductor of 10 mH is connected to a 20 V battery through a resistor of $10\mathrm{k}\mathrm{\Omega }$ and a switch. After a long time, when maximum current is set up in the circuit, the current is switched off. The current in the circuit after $1\mu \mathrm{s}$ is $\frac{\mathrm{x}}{100}\mathrm{mA}$. Then x is equal to $$ - (Take ${\mathrm{e}}^{-1}=0.37$ )

The phase difference between the alternating current and emf is . Which of the following cannot be the constituent of the circuit?

 A series LR circuit is connected to a voltage source with  $\mathrm{V}(\mathrm{t})={\mathrm{V}}_0\sin \omega \mathrm{t}$. After a very long time, current I(t) behaves as $(t_0\gg \frac{L}{R})$:

In which of the following electrical circuit leading quantity is voltage