Question

For an isotropic medium B, H and I are related as (where B, ${\mu }_0$ H and I have usual meaning in the context of magnetic material):

• A. B= ${\mu }_0$ (H + I)
• B. H= ${\mu }_0$ (B + I)
• C. I = ${\mu }_0$ (B + H)
• D. (B - I) = ${\mu }_0$ H

Answer 1

Answer: (A)

Relation between magnetic field permeability, H and $I.$ The magnetic induction in the material is $B=\mu H$ ?(i) Also, $B=B_0+B_m$ Where $B_0=$ magnetic induction in vacuum produced by magnetic field $B_m=$ magnetic induction due to magnetisation of material But, $B_0={\mu }_{0}H$ and $B_m={\mu }_{0}I$ So, $B={\mu }_{0}H+{\mu }_{0}I={\mu }_0(H+I)$