The susceptibility of annealed iron at saturation is 5500. Find the permeability of annealed iron at saturation.
Given:
Susceptibility of iron at saturation=5500=
We know that permeability (μ ) is related to susceptibility (
By the given formula
Where,
=absolute permeability of vacuum=4π × 10-7 henry/metre
Putting the values of 
and 
in the above equation
henry/m
2