Q. Two coil $X\ and\ Y$ are placed in a circuit such that a current changes by 2 A in coil $X$ and magnetic flux change of 0.4 Wb occurs in $Y$. The value of mutual inductance of the coils is
A) 0.8 H
B) 0.2 Wb
C) 0.2 H
D) 5 H
Explanation
(c) $\therefore\ \ \ \phi = Mi$
$\therefore\ \ \ M = \frac{\phi}{i} = \frac{0.4}{2} = 0.2\ $H
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.