Question

The coefficient of mutual inductance, when magnetic flux changes by $2 \times 10^{-2} Wb$ and current changes by $0.01 A$ is

• A. 2 H
• B. 4 H
• C. 3 H
• D. 8 H

Answer 1

Answer: (A)

2 H

Answer 2

Change in magnetic flux $(\phi)=2 \times 10^{-2} Wb$ and change in current $( I )=0.01 \,A$. Change in magnetic flux, $\phi=2 \times 10^{-2}= Ml$ $= M \times 0.01$ or $M=\frac{2 \times 10^{-2}}{0.01}=2\, H$ (where $M =$ coefficient of mutual inductance).