Question 93: Magnetism and Matter

Question

A paramagnetic substance in the form of a cube with sides 1 cm has a magnetic dipole moment of 20 $ 	imes $ 10
–6
J/ T when a magnetic intensity of 60 $ 	imes $ 10
3
A/m is applied. Its magnetic susceptibility is

Accepted Answer

x = ${1 \over H}$
I = ${{Magnetic\,moment} \over {Volume}}$
I = ${{20 	imes {{10}^{ - 6}}} \over {{{10}^{ - 6}}}}$ = 20 N/m
2
x = ${{20} \over {60 	imes {{10}^{ + 3}}}}$ = ${1 \over 3} 	imes {10^{ - 3}}$
= 0.33 $ 	imes $ 10
$-$3
= 3.3 $ 	imes $ 10
$-$4

Answer

3.3 $ 	imes $ 10
–4

Answer

2.3 $ 	imes $ 10
–2

Answer

4.3 $ 	imes $ 10
–2

Answer

3.3 $ 	imes $ 10
–2

Magnetism and Matter

A paramagnetic substance in the form of a cube with sides 1 cm has a magnetic dipole moment of 20 \times 10 –6 J/ T when a magnetic intensity of 60 \times 10 3 A/m is applied. Its magnetic susceptibility is

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