Q. An e.m.f. of $12\ volt$ is produced in a coil when the current in it changes at the rate of $45\ amp/minute$. The inductance of the coil is
A) $0.25\ henry$
B) $1.5\ henry$
C) $9.6\ henry$
D) $16.0\ henry$
Explanation
(d) $d = L\frac{di}{dt} \Rightarrow 12 = L \times \frac{45}{60} \Rightarrow L = 16H$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.