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

Options

A. The rates at which currents are changing in the two coils
B. Relative position and orientation of the two coils
C. The material of the wires of the coils
D. The currents in the two coils

Answer

B

Explanation

`M=(mu_0N_1N_2A)/l`