Choose the CORRECT variation of mu (permeabil | vedclass

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(D) For a ferromagnetic material, the magnetic permeability $\mu$ is not constant; it depends on the magnetising field intensity $(H)$.Initially, as $

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(D) For a ferromagnetic material, the magnetic permeability $\mu$ is not constant; it depends on the magnetising field intensity $(H)$.Initially, as $H$ increases, the magnetic susceptibility $\chi_m$ and permeability $\mu$ increase rapidly.As the material approaches magnetic saturation, the rate of increase of magnetization decreases, and $\mu$ reaches a maximum value.Beyond this point, as $H$ increases further towards saturation, the permeability $\mu$ decreases and eventually approaches a constant value (the permeability of free space $\mu_0$).Graph $D$ correctly represents this behavior, showing an initial increase in $\mu$ followed by a decrease as the material approaches saturation.Therefore, the correct option is $D$.

Choose the $CORRECT$ variation of $\mu$ (permeability of material) with magnetising field intensity $(H)$ for a ferromagnetic material.

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