The area of the hysteresis loop of a substanc | vedclass

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(A) The hysteresis loop represents the relationship between the magnetic field intensity $(H)$ and the magnetic flux density $(B)$ for a ferromagnetic

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the energy loss to magnetise a unit volume of a substance in a unit cycle.

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(A) The hysteresis loop represents the relationship between the magnetic field intensity $(H)$ and the magnetic flux density $(B)$ for a ferromagnetic material.When a ferromagnetic material is subjected to a cycle of magnetization,energy is dissipated in the form of heat due to the internal friction of magnetic domains.The energy dissipated per unit volume per cycle is given by the area enclosed by the $B-H$ hysteresis loop.Mathematically,the energy loss per unit volume per cycle is $\oint H \cdot dB$,which corresponds to the area of the loop.

The area of the hysteresis loop of a substance indicates:

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