A magnetic field of 1 30 T is to be set up in an iron core toroid The toroid has a mean radius of 10 0 cm, and magnetic permeability of 5 000 0 What current is required if the winding has 470 turns of wire The thickness of the iron ring is small compared to 10 cm, so the field in the material is ne...

A magnetic field of 1.30 T is to be set up in an iron-core toroid. The toroid

Question:

A magnetic field of 1.30 T is to be set up in an iron-core toroid. The toroid has a mean radius of 10.0 cm, and magnetic permeability of 5 000 μ0. What current is required if the winding has 470 turns of wire? The thickness of the iron ring is small compared to 10 cm, so the field in the material is nearly uniform.