Q. An inductive circuit contains a resistance of $10\ ohm$ and an inductance of $2.0\ henry$. If an ac voltage of $120\ volt$ and frequency of $60\ Hz$ is applied to this circuit, the current in the circuit would be nearly
A) 0.32 $amp$
B) 0.16 $amp$
C) 0.48 $amp$
D) 0.80 $amp$
Explanation
(b) $Z = \sqrt{R^{2} + X_{L}^{2}} = \sqrt{10^{2} + (2\pi \times 60 \times 2)^{2}} = 753.7$
$\therefore i = \frac{120}{753.7} = 0.159\ A$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.