First slide

Magnetic properties of matter

Question

A paramagnetic substance of susceptibility $3 \times 10^{- 4}$ is placed in a magnetic field intensity of $6 \times 10^{- 4} A . m^{- 1}$ . Then the intensity of magnetization in the units of $A - m^{- 1}$ is__

Moderate

A

$1.33 \times 1 0^{- 8}$
B

$0.75 \times 1 0^{- 8}$
C

$18 \times 1 0^{- 8}$
D

$14 \times 1 0^{- 8}$

Solution

Intensity of magnetization is $I = χ . H$
$χ$ =susceptibility $H =$ magnetic field intensity
$\Rightarrow I = 3 \times 10^{- 4} \times 6 \times 10^{- 4}$
$\Rightarrow I = 18 \times 10^{- 8} {Am}^{-1}$

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