Current in an ac circuit is given by `I= 3 sin omega t + 4 cos omega t, ` then

If an alternating current is given by i = a sin ( omega t) + b cos ( omega t), then RMS value of current is :-

The voltage and current in an a.c. circuit are given by E = 300 sin (omega t + pi//2) and I = 5 sin omega t . What is power factor of the circuit and power dissipated in each cycle ?

The instantaneous current in an A.C. circuit is given by I= 2 sin (omega t+theta) ampere. The r.m.s. value of the current is

If the instantaneous current in a circuit is given by I = 20 cos (omega t + phi) A , the rms value of the current is

An AC current is given by I = I_(1) sin omega t + I_(2) cos omega t A hot wire ammeter will give a reading :