The magnetic susceptibility of a paramagnetic substance is $3 \times 10^{- 4}$ .It is in a magnetising field of $4 \times 10^{- 4} A / m$ . The magnetisation of the substance will be

Q. A magnetising field of

2 \times 10^{3}

m^{- 1}

produces a magnetic flux density of

8 π

T in an iron rod. The relative permeability of the rod will be.

Q. A sample of paramagnetic salt contains

2.0 \times 10^{24}

atomic dipoles each of dipole moment

1.5 \times 10^{- 23} J T^{- 1}

. The sample is placed under a homogeneous magnetic field of

0.64

T, and cooled to a temperature of

4.2

K. The degree of magnetic saturation achieved is equal to

15

%. What is the total dipole moment of the sample for a magnetic field of

0.98

T and a temperature of

2.8

K? (Assume Curie's law)

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A paramagnetic sample shows a net magnetisation of 8A m−1 when placed in an external magnetic field of 0.6T at a temperature of 4K. When the same sample is placed in an external magnetic field of 0.2T at a temperature of 16K, the magnetisation will be.

A paramagnetic sample shows a net magnetisation of $8$ A $m^{- 1}$ when placed in an external magnetic field of $0.6$ T at a temperature of $4$ K. When the same sample is placed in an external magnetic field of $0.2$ T at a temperature of $16$ K, the magnetisation will be.