Question

The coefficient of mutual inductance between two coils depends on

• A. medium between the coils
• B. separation between the two coils
• C. orientation of the two coils
• D. all of the above

Answer 1

Answer: (D)

all of the above

The flux linked with two coils will depend upon the angle between the two coils. If their planes are parallel, then magnetic flux from one would completely pass through the other. If the planes are perpendicular, no flux due to any of the coils would flow through the other.

The size of the two coils may be different which will affect the number of lines crossing the coil. The medium, if magnetic, will concentrate the field lines. Thus, all parameters would affect the inductance between them.