A 50-cm-long solenoid has 100 turns of wire and carries a current of 0.95 A. It has

Question:

A 50-cm-long solenoid has 100 turns of wire and carries a current of 0.95 A. It has a ferromagnetic core completely filling its interior where the field is 0.71 T. Determine the
(a) Magnetic permeability and
(b) Relative magnetic permeability of the material.