Rankers Physics

Mutual Induction: Practice Problem & Solution

Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be : Mutual Induction diagram: Two circular coils can be arranged in any
maximum In situation (a)
maximum In situation (b)
maximum In situation (c)
the same in all situations

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Mutual Induction. Understanding the underlying formula is key to arriving at the correct answer below:

Based on the visual arrangement of the coils, the mutual inductance is maximum in situation (a).

This is because the coils are placed co-axially (one above the other), allowing the maximum amount of magnetic flux from the primary coil to pass through the secondary coil, resulting in the highest coupling coefficient.

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