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

Answer: (B)

0.016 amp

Answer 2

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