A magnetic specimen has magnetisation I=1.5×10³ A m⁻¹ when subjected to a magnetising field H=5×10³ A m⁻¹. Assuming linear behaviour, its relative permeability is:
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A magnetic specimen has magnetisation I=1.5×10³ A m⁻¹ when subjected to a magnetising field H=5×10³ A m⁻¹. Assuming linear behaviour, its relative permeability is:

G1 Physics · Accepted Answer

Magnetic susceptibility is χₘ = I/H. Thus, χₘ = (1.5×10³)/(5×10³) = 0.3. For a linear medium, μᵣ = 1+χₘ. Therefore, μᵣ = 1+0.3 = 1.3.