Question

A paramagnetic substance of susceptibility $3\times 10^{- 4}$ is placed in a magnetic field of $3\times 10^{- 4} \, A \, m^{- 1}$ . Then, the intensity of magnetisation in units of $A \, m^{- 1}$ is

• A. $9\times 10^{- 8}$
• B. $1\times 10^{- 4}$
• C. $1\times 10^{- 3}$
• D. $9\times 10^{- 10}$

Answer 1

Answer: (A)

Given, susceptibility, $\chi=3\times 10^{- 4}$
Magnetic field, $B=3\times 10^{- 4}Am^{- 1}$
Since, the intensity of magnetization,
$I=susceptibility\times magnetic \, field$
$=3\times 10^{- 4}\times 3\times 10^{- 4}$
$=9\times 10^{- 8}Am^{- 1}$