An iron ring having 500 turns of wire and mean diameter of 12 cm carries a current of 0.3 A
Channel: Doubtnut
Date: 2020-08-23

An iron ring having 500 turns of wire and mean diameter of 12 cm carries a current of 0.3 A. The relative permeability of iron is 600. What is the magnetic flux density in the core ? What is the magnetisation field intensity ? What part of the density is due to the electronic loop currents in the core ?