Question

What is the effect of winding coils on a soft iron core?

Options

• It makes the coil axes perpendicular.

• It greatly increases \[M\] through the permeability of the core medium.

• It makes \[M=0\] by removing flux linkage.

• It changes the SI unit from Henry to volt.

Answer 1

The permeability of the core medium affects mutual inductance. Winding the coils on a soft iron core greatly increases \[M\] .