Q. The reactance of a coil when used in the domestic ac power supply $(220\ volts$, 50 cycles per second) is $50\ ohms$. The inductance of the coil is nearly
A) 2.2 $henry$
B) 0.22 $henry$
C) 1.6 $henry$
D) 0.16 $henry$
Explanation
(d) $X_{L} = 2\pi v\ L \Rightarrow L = \frac{X_{L}}{2\pi v} = \frac{50}{2 \times 3.14 \times 50} = 0.16\ H$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.