Q.
The current (I) in the inductance is varying with time according to the plot shown in figure
Which one of the following is the correct variation of voltage with time in the coil
A) [image:6_image29.emf]
B) [image:6_image30.emf]
C) [image:6_image31.emf]
D) [image:6_image32.emf]
Explanation
(d) $V = - L\frac{di}{dt}$
Here $\frac{di}{dt}$ +ve for $\frac{T}{2}$ time and
$\frac{di}{dt}$ is -ve for next $\frac{T}{2}$ time
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.