The mutual inductance between two coils can be increased by?

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1. The mutual inductance between two coils can be increased by?

Decreasing the number of turns in the coils

Increasing the number of turns in the coils

Winding the coils around a wooden core

None of the above methods work

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More turns in each coil strengthen the magnetic coupling between them, directly increasing their mutual inductance — a wooden core, lacking magnetic permeability, would do the opposite.