Advertisements
Advertisements
प्रश्न
The relative magnetic permeability of a magnetic material is 800. Identify the nature of magnetic material and state its two properties.
Advertisements
उत्तर
A magnetic material having relative permeability of 800 would be classified as a ferromagnet. A few examples of such materials include iron and nickel.
Its two properties are:
(1) All ferromagnetic materials become paramagnetic when heated to a temperature above the Curie temperature (Tc).
(2) These materials show a strong attraction towards magnetic fields and have a tendency to become magnets themselves.
APPEARS IN
संबंधित प्रश्न
Choose the correct option:
A magnetising field of 360 Am−1 produces a magnetic flux density (B) = 0.6T in a ferromagnetic material. What is its permeability in Tm A−1?
All atoms of a magnetic substance have a resultant magnetic moment even in absence of external magnetic field. The substance is ______.
The earth’s field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion?
Why does a paramagnetic sample display greater magnetisation (for the same magnetising field) when cooled?
Explain qualitatively on the basis of domain picture the irreversibility in the magnetisation curve of a ferromagnet.
Metals getting magnetised by orientation of atomic magnetic moments in external magnetic field are called ______.
If a charged particle at rest experience no electromagnetic force
A paramagnetic sample shows a net magnetisation of 8 Am–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 ______.
If the magnetizing field on a ferromagnetic material is increased, its permeability ______.
State the dimensions of magnetization.
