Obtain anexpression for the average power of an a.c circuit .

Derive an experssion for the average power in LCR circuit connected to a.c. supply. Hence define power factor. Show that average power cousumed per cycle in an a.c. circuit conataining an ideal capacitor is zero.

Power In An Ac Circuit

Obtain an expresion for average power dissipated in a purely resistive A.C. circuit. Define power factor of the circuit and state its value for purely resistive A.C. circuit. A rectangular coil of a moving coil galvanometer contains 50 turns each having area 12cm^(2) . It is suspended in radial magnetic field 0.025 Wb//m^(2) by a fibre of twist constant 15xx10^(-10)N-m//degree . Calculate the sensitivity of the moving coil galvanometer.

The average power in LCR series circuit is

An a.c. emf of e=220 sin 100 pit is passed through the resistance of 1 kOmega . The average power of the a. c. circuit is

An electric bulb consumes only 25% of the peak power in an a.c. circuit. What is the phase difference between the circuit and the applied a.c. voltage ?

In a series RC circuit with an AC source, R = 300 Omega, C = 25 muF, epsilon_0 50 V and v = 50/((Pi) Hz . Find the peak current and the average power dissipated in the circuit.

In the given A.C. circuit the average power consumed in the circuit is