Magnetic Suspectibility and Permiability

Chapter 5 topic suspectibility and permiability

For most substatances magnetization is directly proportional to?

M Directly proportional to H (Magnetic Field Strength)

M proportional ho H gives a proportionality constant which is? and what are those matrials called…..

Magnetic Suspectibility (Xm) .. Linear Dielectric

If -ve Xm the material is ……… and …… is weakened by presence of that material

If small positive Xm the material is ……… and …… is strengthened by presence of that material

paramagnetic , stre

If large positive Xm the material is ……… Xm is not …… to H

proportional to

Permeability and it’s expression.

μ = μ0 (1+ χm) , B = μ~H

Clarify magnetic materials in terms of relative

permeability μr

μr < 1 → Diamagnetic

μr > 1 → Paramagnetic

μr » 1 → Ferromagnetic

For vaccum Xm = ?

Zero. No magnetization

Therefore volume bound current density in a linear medium is …… volume free current density.

Jb = χ Jf