Correct option is C
The
B-H curve shows the relationship between the magnetic flux density (
B) and the magnetic field intensity (
H). For materials like
air or vacuum, which are non-magnetic, the B-H curve is a straight line passing through the origin, as there is no hysteresis or magnetic saturation.
Key Points:
· Magnetic materials like soft iron and silicon steel exhibit hysteresis, so their B-H curve is not a straight line.
· Air, as a non-magnetic material, has a constant permeability equal to the permeability of free space (μ0).
