Alternating Current

An a.c. source of \(15 \mathrm{~V}, 50 \mathrm{~Hz}\) is connected across an inductor (L) and resistance (R) in series R.M.S. current of \(0.5 \mathrm{~A}\) flows in the circuit. The phase difference between applied voltage and current is \(\left(\frac{\pi}{3}\right)\) radian. The value of resistance \((\mathrm{R})\) is \(\left(\tan 60^{\circ}=\sqrt{3}\right)\)