Question

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

• A. the rates at which currents are changing in the two coils
• B. the relative position and orientation of the two coils
• C. the materials of the wires of the coils
• D. the currents in the two coils

Hint:

Mutual inductance depends on the geometry, orientation, and coupling of the coils, not on the material of the wires.