Alternating Current

In an LC circuit

Which of the following represents the value of voltage and current for an A.C. circuit with resistor at any instant?

An a. c. voltage is applied to pure inductor. The current in the inductor

A hot wire ammeter reads 20 A in A.C. circuit. The peak value of the current is

If $\phi$ is the phase difference between the instantaneous values of voltage and current in an AC circuit, then the average power loss over a complete cycle is

The average power dissipation in a pure capacitor in AC circuit is

The average current in sinusoidal A.C. over one complete cycle is

In LCR series circuit at resonance

In LCR resonant circuit, the current and voltage have phase difference

A small signal voltage $V(t)=V_{0}\sin\omega t$ is applied across an ideal capacitor C :

An ac voltage is applied to a resistance $R$ and an inductor $L$ in series. If $R$ and the inductive reactance are both equal to $3\Omega$, the phase difference between the applied voltage and the current in the circuit is

A capacitor of capacity $C$ has reactance $X$. If capacitance and frequency become double hen reactance will be

In an a.c. circuit, a resistance R is connected in series with an inductance 'L'. If phase angle between voltage and current is 45°, the value of inductive reactance will be $\left(\sin 45^{\circ}=\dfrac{1}{\sqrt{2}}=\cos 45^{\circ}\right)$

A coil has inductance 2 H . The ratio of its reactance when it is connected first to an a.c. source and then to a d.c. source is

In an a.c. circuit, a resistance ' $R$ ' is connected in series with an inductance ' $L$ '. If phase angle between voltage and current is 45°, the value of inductive reactance will be
$\left(\tan 45^{\circ}=1\right)$