A resistor of and an inductor of reactance are connected in series to an AC source

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

A resistor of

15\,\Omega

and an inductor of reactance

20\,\Omega

are connected in series to an AC source. If the rms current in the circuit is

4\,\text{A}

, the rms value of the supply voltage is (a)

140\,\text{V}

(b)

100\,\text{V}

(c)

80\,\text{V}

(d)

71\,\text{V}