The instantaneous current from an a.c. source is given by `I=5sim 314t`. What is the r.m.s value of the current.

What is meant by rms value of alterating current?

Peak value of emf of an ac source is Ɛ_0 . What is its rms value ?

A 25 µ F capacitor, a 0.1 henry inductor and a 25 Ω resistor are connected in series with an ac source with voltage. V = 310 sin 314t. (a) What is the frequency of the voltage ? (b) Calculate the reactance and impedance and (c) current in the circuit.

An alternating emf e = (10 sin 100 πt) volt where t is in second is impressed across a non inductive resistance, R = 10Ω. What is the value of rms current in the circuit?