A solenoid of 500 turns/m is carrying a current of 3 A. Its core is made of iron which has relative permeability 5001. The magnitude of magnetization is:

Which theory is essential for a complete explanation of ferromagnetic interactions?

A solenoid has a core of a material with relative permeability 501. The insulated windings carry a current of 2.5 A and have 900 turns per metre. The magnetization M in A/m is: