Question

An inductive circuit contains resistance of 10 Ω and an inductance of 20 H. If an ac voltage of 120 V and frequency 60 Hz is applied to this circuit, the current would be nearly

• A. 0.32 amp
• B. 0.016 amp
• C. 0.48 amp
• D. 0.80 amp

Answer 1

The correct option is B 0.016 amp

$i=\frac{V}{\sqrt{R^2+{\omega }^2{L}^2}}=\frac{120}{\sqrt{100+4{\pi }^2\times {60}^2\times {20}^2}}=0.016A$