Question

How will you quantize the relative permeability of a paramagnetic substance ?

• A. Much more than one
• B. Slightly more than one
• C. Less than one but greater than zero
• D. Zero

Answer 1

Answer: (B)

Slightly more than one

Paramagnetic substances are those which are attracted slightly in the direction of the magnetic field. As such, the magnetic permeability of these materials is slightly greater than $1$.
Similarly, diamagnetic materials are those which are repelled slightly away from the direction of magnetic field. These materials have their permeability slightly less than $1$.
And ferromagnetic materials are those which are attracted very strongly and their permeabilities are much higher than $1$.