Advertisements
Advertisements
प्रश्न
Identify the following magnetic materials :
Advertisements
उत्तर
For Diamagnetic materials, xm < 0
For paramagnetic materials, xm > 0
For superparamagnetic materials, xm >>0
(i) if xm =-0.00015 < 0, the material is Diamagnetic.
(ii) if xm = 10-5 > 0, the material is paramagnetic because the value of susceptibility is greater than zero but has a very small value.
APPEARS IN
संबंधित प्रश्न
Draw magnetic field line when a (i) diamagnetic, (ii) paramagnetic substance is placed in an external magnetic field. Which magnetic property distinguishes this behaviour of the field line due to the substances?
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?
A paramagnetic gas has 2.0 × 1026 atoms/m with atomic magnetic dipole moment of 1.5 × 10−23 A m2 each. The gas is at 27°C.
- Find the maximum magnetization intensity of this sample.
- If the gas in this problem is kept in a uniform magnetic field of 3 T, is it possible to achieve saturation magnetization? Why?
Why is diamagnetism, in contrast, almost independent of temperature?
Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a ferromagnet?
If a charged particle at rest experience no electromagnetic force
If the magnetizing field on a ferromagnetic material is increased, its permeability ______.
A uniform magnetic field gets modified as shown in figure when two specimens A and B are placed in it.
 |
 |
| (a) | (b) |
- Identify the specimen A and B.
- How is the magnetic susceptibility of specimen A different from that of specimen B?
The relative magnetic permeability of a substance X is slightly less than unity and that of substance Y is slightly more than unity, then ______.
What is magnetic hysterisis?
