The susceptibility of annealed iron at saturation is 5500. Find the permeability of annealed iron at saturation.
Permiability (μ) = μ0(1 + x)
Given susceptibility = 5500
μ = 4 × 10–7(1 + 5500)
= 4 × 3.14 × 10–7 × 5501 6909.56 × 10–7 ≈ 6.9 × 10–3
