Two coils 1 and 2 are placed close to each other. On changing current flowing through coil 1 an induced emf is set up in coil 2 and vice-versa. What is the relation between mutual inductance of coil 1 due to change in current in coil 2 and the mutual inductance of coil 2 due to change in current in coil 1?

Two coils 1 and 2 are placed close to each other. On changing current

1.	Two coils 1 and 2 are placed close to each other. On changing current flowing through coil 1 an induced emf is set up in coil 2 and vice-versa. What is the relation between mutual inductance of coil 1 due to change in current in coil 2 and the mutual inductance of coil 2 due to change in current in coil 1?
Answer» Solution :If `M_(12)` is the mutual INDUCTANCE of coil 1 due to change in current FLOW in coil 2 and `M_(21)`, the mutual inductance of coil 2 due to change in flow of current in coil 1, then `M_(12) = M_(21)`.

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