For a specimen of iron, permeability depends on magnetic intensity as μ=[0.4/H + 12×10⁻⁴] H/m. What value of H produces flux density B=1 T?
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For a specimen of iron, permeability depends on magnetic intensity as μ=[0.4/H + 12×10⁻⁴] H/m. What value of H produces flux density B=1 T?

G1 Physics · Accepted Answer

B=μH=[0.4/H+12×10⁻⁴]H=0.4+12×10⁻⁴H. Setting B=1 gives H=0.6/(12×10⁻⁴)=500 A/m. Hence B.