Q. In AC circuit a resistance of $R\ \Omega$ is connected in series with an inductance L. If the phase difference between the current and voltage is $45{^\circ}$, the inductive reactance will be
A) R/2
B) R/4
C) R
D) None of the above
Explanation
(c) Phase difference in R – L circuit,
$\phi = \tan^{- 1}\frac{X_{L}}{R}$
or $\tan{45{^\circ} = \frac{X_{L}}{R}}$
or ${\ X}_{L} = R$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.