Question: Two coils of wire are placed close together. Initially, a current of 2.5 A exists in one of the coils, but there is no current

Two coils of wire are placed close together. Initially, a current of 2.5 A exists in one of the coils, but there is no current in the other. The current is then switched off in a time of 3.7 × 10-2 s. During this time, the average emf induced in the other coil is 1.7 V. What is the mutual inductance of the two coil system?

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