Q.
The value of alternating emf $E$ in the given circuit will be
A) 220 V
B) 140 V
C) 100 V
D) 20 V
Explanation
(c) For series L – C – R circuit
$V = \sqrt{V_{R}^{2} + \left( V_{L} - V_{C} \right)^{2}}$
$= \ \sqrt{(80)^{2} + (40 - 100)^{2}}$
= 100 V
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.