मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

Advertisements
Advertisements

प्रश्न

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

टीपा लिहा
Advertisements

उत्तर

The permeability of ferromagnetic materials is not independent of the applied magnetic field. It is greater for a lower field and vice versa.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Magnetism and Matter - Exercise [पृष्ठ २०२]

APPEARS IN

एनसीईआरटी Physics Part I and II [English] Class 12
पाठ 5 Magnetism and Matter
Exercise | Q 5.16 (d) | पृष्ठ २०२

संबंधित प्रश्‍न

The susceptibility of magnesium at 200 K is 1.8 x 10-5. At what temperature will the susceptibility decrease by 6 x 10-6?


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?


Distinguish between diamagnetic and paramagnetic substances.


A meter gauge train is heading north with speed 54 km/hr in earth's magnetic field 3 x 10-4T. The e.m.f. induced across the axle joining the wheels is ..........

(a) 0.45 mV

(b) 4.5 mV

(c) 45 mV

(d) 450 m V


The magnetic susceptibility of annealed iron at saturation is 4224. Find the permeability of
annealed iron at saturation. (μ0 = 4Π × 10−7 SI unit)


Which of the following substances are para-magnetic?

Bi, Al, Cu, Ca, Pb, Ni


A tangent galvanometer shows a deflection of 45° when 10 mA of current is passed through it. If the horizontal component of the earth's magnetic field is `B_H = 3.6 xx 10^-5  "T"` and radius of the coil is 10 cm, find the number of turns in the coil.


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 ______.


Which graph shows the variation of magnetic susceptibility (`chi`) with magnetizing field (H) for a paramagnetic substance?


Explain qualitatively on the basis of domain picture the irreversibility in the magnetisation curve of a ferromagnet.


The given figure represents a material which is ______.


A diamagnetic material in a magnetic field moves ______.

Which of the following property shows the property of ferromagnetic substances?


Most of the substance show which of the magnetic property:-


If a charged particle at rest experience no electromagnetic force


According to the Atomic theory, on heating a magnet, the thermal energy of the elementary magnet ______


S is the surface of a lump of magnetic material.

  1. Lines of B are necessarily continuous across S.
  2. Some lines of B must be discontinuous across S.
  3. Lines of H are necessarily continuous across S.
  4. Lines of H cannot all be continuous across S.

Which of the following cannot modify an external magnetic field as shown in the figure?

 


State the dimensions of magnetization.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×