Question

Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be maximum in -



Assume that the area of the smaller coil is very small.

• A. $A$
• B. $B$
• C. $C$
• D. The same in all situations

Answer 1

The correct option is A $A$


The mutual inductance between two coils is maximum when they share maximum magnetic flux through each other.

Maximum sharing of magnetic flux is possible in arrangement $\left(A\right)$, so, the mutual induction between the coils will be maximum in this case.

Hence, option $\left(A\right)$ is the correct answer.