Question
A coil has an inductance of 0.7 H and is joined in series with a resistance of 220 ohm.When an alternating e.m.f. of 220 V at 50 cps is applied to it, then the wattless component of the current in the circuit is- n nta. 5A n ntb. 0.5A n ntc. 0.7A n ntd. 7A