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प्रश्न
Explain the meaning of the following statement:
Curie temperature for soft iron is 770°C.
उत्तर
The temperature at which a ferromagnetic material turns paramagnetic is known as the Curie temperature. Soft iron turns paramagnetic around 770°C.
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संबंधित प्रश्न
Give any ‘two’ points of differences between diamagnetic and ferromagnetic substances.
Explain Curie’s law for a paramagnetic substance.
A rod of magnetic material of cross-section 0.25 cm2 is placed in a magnetizing field of intensity 4000 A/m-1. The magnetic flux passing through the rod is 25 × 10-6 Wb. Find out
(a) relative permeability
(b) magnetic susceptibility and
(c) magnetisation of the rod.
A domain in a ferromagnetic substance is in the form of a cube of side 1 µm. If it contains 8 × 1010 atoms and each atomic dipole has a dipole moment of 9 × 10-24 Am2 then the magnetisation of the domain is ______.
All atoms of a magnetic substance have a resultant magnetic moment even in absence of external magnetic field. The substance is ______.
Above the curie temperature the susceptibility of ferromagnetic substance varies ____________.
Earth's magnetic field analyses has a horizontal component except at:-
The universal property of all substances is ______.
Magnetic susceptibility for a paramagnetic and diamagnetic materials is respectively ______.
