Question

The magnetic susceptibilty for diamagnetic materials is

• A. small and negative
• B. small and positive
• C. large and positive
• D. large and negative

Answer 1

The correct option is A small and negative

$\text{The magnetic susceptibility}\left(X_m\right)\text{of a material is equal to}$

$\text{the ratio of the magnetization}\left(M\right)\text{within the material}$

$\text{to the applied magnetic field}\left(H\right)\text{or}{X}_m=\frac{M}{H}.$

$\text{Magnetic materials may be classified diamagnetic, paramagnetic or ferromagnetic}$

$\text{on the basis of their susceptibilities.}$

$\text{Diamagnetic materials are characterized by small negative susceptibilities.}$

$\text{Para-magnetic materials have small positive susceptibilities.}$

$\text{Ferro-magnetic materials have relatively large positive susceptibilities.}$