Rankers Physics

Mutual Induction: Practice Problem & Solution

Two coils X and Y are placed in a circuit such that a current changes by 2 A in coil X and the magnetic flux change of 0.4 Wb occurs in coil Y. The value of mutual inductance of coils is :
0.2 H
2 H
0.5 H
5 H

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:

The mutual inductance ($M$) is calculated by the ratio of flux change in coil Y to the current change in coil X:

$$M = \frac{\Delta \phi_Y}{\Delta I_X} = \frac{0.4 \text{ Wb}}{2 \text{ A}}$$

$M = 0.2 \text{ H}$

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