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Magnetic Materials — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsMagnetic Materials2 Marks
Question
Which magnetic materials have
(i) relative permeability > 1
(ii) relative permeability <1?
✓

Answer

(i) Both paramagnetic and ferromagnetic materials have relative permeability (μr) greater than 1. μr is only slightly greater than 1 for a paramagnetic material. μr is very high for a ferromagnetic material and is a function of the magnetizing field (also called the magnetic field intensity).
(ii) μr is slightly less than 1 for a diamagnetic material.

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