A non-ideal inductor with inductance L and internal resistance r is connected to an AC source with voltage $v(t) = V_m\sin(\omega t)$. If the instantaneous current through the inductor is $i(t) = I_m\sin(\omega t - \phi)$, which of the following expressions CORRECTLY represents the average power dissipated in the inductor?

The instantaneous value of current and emf in an A.C. circuit are $I = \frac{1}{{\sqrt 2 }}\sin 314t$ amp and $E = \sqrt 2 \sin \left( {314t - \frac{\pi }{6}} \right)V,$ with respect to I) will be

A mixer of $100\,\,{\mkern 1mu} \Omega$ resistance is connected to an A.C. source of 200 v and 50 cycles/sec. The value of average potential difference across the mixer will be

An AC current has an RMS value of 2A. What is the average value of the current over a full cycle?

In a circuit, the value of the alternating current is measured by hot wire ammeter as 10 ampere. Its peak value will be

The voltage of an ac supply varies with time (t) as $V = 120\sin 100\pi t\cos 100\pi t$ The maximum voltage and frequency respectively are

An alternating voltage of $E = 200\sqrt 2 \sin (100t)V$ is connected to a condenser of $1\mu F$ through an a.c. ammeter the reading of the ammeter will be.

For a purely resistive AC circuit, what is the phase difference between the voltage and current?

A $100\,\,W$ bulb produces an electric field of $2.9\,\,V/m$ at a point $3\,\,m$ away. If the bulb is replaced by $400\,\,W$ bulb without disturbing other conditions, then the electric field produced at the same point is

The instantaneous values of current and voltage in an ac circuit are i=100sin⁡ 314 t amp and $e = 200\;in\;\left( {314\;t + \pi /3} \right)V$ , respectively. If the resistance is $1{\rm{\Omega }}$ , then the reactance of the circuit will be

The instantaneous voltage of an AC source is $v = 200sin(314t)$. What is the frequency of the source?