Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon

the rates at which currents are changing in the two coils
the relative position and orientation of the two coils
the materials of the wires of the coils
the currents in the two coils

Correct answer: the relative position and orientation of the two coils

Solution

The mutual inductance between two coils is primarily influenced by how they are positioned and oriented relative to each other, as this affects the magnetic field linkage between them.

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