Question

A coil of resistance 30 ohm and inductive reactance 40 ohm is connected in parallel with a branch having 15 ohm resistance in series with 18 ohm capacitive reactance. This circuit is connected across 220 volt Ac mains.Find ¡)the current taken by each branch,¡¡)the total current taken from the mains. and¡¡¡)the power factor of the circuit.Also draw phasor diagram.

Answer 1

So far we have looked at the behaviour of inductors connected to DC supplies and hopefully by now we know that when a DC voltage is applied across an inductor, the growth of the current through it is not instant but is determined by the inductors self-induced or back emf value.