Question

What happens to mutual inductance as the distance between coils increases?

Options

• \[M\] decreases because less flux links the secondary.

• \[M\] increases because more flux links the secondary.

• \[M\] remains unchanged because distance does not affect flux linkage.

• \[M\] becomes equal to the current in the primary.

Answer 1

Increasing the distance between coils reduces the flux that links the secondary coil. Consequently, mutual inductance decreases.