Question

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

• A. $0.16amp$
• B. $0.3amp$
• C. $0.48amp$
• D. $0.80amp$

Answer 1

The correct option is B $0.3amp$

$Z=\sqrt{R^2+{\left(\omega L\right)}^2}=\sqrt{{10}^2+{(120\pi \times 2)}^2}=376\Omega I=\frac{V}{Z}=\frac{120}{376}=0.3A$