Question

For diamagnetic materials, magnetic susceptibility is

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

Answer 1

Answer: (A)

Magnetic susceptibility is given by
$\chi ={\mu }_r-1$
where, ${\mu }_r$ is the relative magnetic permeability. Since, ${\mu }_r$ for diamagnetic materials is less than or equal to $1,$ therefore, $\chi$ is less than or equal to 0 for diamagnetic materials.
Hence, magnetic susceptibility is small and negative for diamagnetic materials.