Advertisements
Advertisements
प्रश्न
Out of the two magnetic materials, 'A' has relative permeability slightly greater than unity while 'B' has less than unity. Identify the nature of the materials 'A' and 'B'. Will their susceptibilities be positive or negative?
Advertisements
उत्तर
For a paramagnetic material, the relative permeability lies between 1<μr<1+ε and its susceptibility lies between 0<`chi`<ε.
Hence, 'A' is a paramagnetic material and its susceptibility is positive. This is because its relative permeability is slightly greater than unity.
For a diamagnetic material, the relative permeability lies between 0≤μr<1 and its susceptibility lies between −1<`chi`<0.
Hence, 'B' is a diamagnetic material and its susceptibility is negative. This is because its relative permeability is less than unity.
Here, μr and `chi` refer to the relative permeability and susceptibility.
APPEARS IN
संबंधित प्रश्न
The susceptibility of a magnetic material is 0·9853. Identify the type of magnetic material. Draw the modification of the field pattern on keeping a piece of this material in a uniform magnetic field.
Two substances A and B have their relative permeability slightly greater and slightly less than 1 respectively. What do you conclude about A and B as far as their magnetic materials are concerned?
Two identical bar magnets each of magnetic moment M, separated by some distance are kept perpendicular to each other. The magnetic induction at a point at the same distance d from the centre of magnets, is (µ0 = permeability of free space)
The product of magnetic susceptibility (`chi`) and absolute temperature (T) is constant for a ____________.
A small quantity of paramagnetic liquid is taken in a watch - glass and kept on two dissimilar magnetic poles. The liquid ____________.
A domain in a ferromagnetic substance is in the form of a cube of side length 1 µm. If it contains 6 x 1010 atoms and each atomic dipole has a dipole moment of 7 x 10-24 Am2, then magnetization of the domain is ____________.
Metals getting magnetised by orientation of atomic magnetic moments in external magnetic field are called ______.
Which of the following property shows the property of ferromagnetic substances?
According to the Atomic theory, on heating a magnet, the thermal energy of the elementary magnet ______
Which of the following cannot modify an external magnetic field as shown in the figure?
