B-h curve, Physics

Assignment Help:

BH curve:

For any ferromagnetic material there is a definite value of flux density (B), corresponding to a specified value of magnetising force (H).  These values can be ascertained from graphs of B against H for each material. A BH curve can only be obtained using a piece of material that has never been magnetised before. Once the material has been magnetised and the curve obtained, the production of another BH curve, from the same piece of material, is not possible.

The BH curve is the line O to Q on the hysteresis curve shown below.

1954_HYSTERESIS LOOP.png

The gradient of the BH curve gives the permeability of the material.  In practice it is found that the magnetic property of different specimens of the same material vary considerably. The fact that permeability varies for a given material may also be seen from the shape of the curve, if the permeability was a constant, the graph of B against H would be a straight line.

 

 

 


Related Discussions:- B-h curve

Explain antinodes of standing waves, The points of maximum amplitude are ca...

The points of maximum amplitude are called as antinodes. At ends density and air pressure both are very low.

Explain gravitational lines of forces, Gravitational field can also be show...

Gravitational field can also be shown by lines of force. This is same in several ways as that of electric lines of forces. With one dissimilarity, electric charges are negative and

Define the physical significance of damping coefficient, Define the physica...

Define the physical significance of damping coefficient and how can we caluclate it? What is its unit

Project, two balls connected by massless string wherein the first ball A is...

two balls connected by massless string wherein the first ball A is confined to a plane surface with frection and the second ball B, due to the string’s passage through a small hol

Proton was discovered, Proton was discovered by: (1)Chadwick (2)Thom...

Proton was discovered by: (1)Chadwick (2)Thomson (3)Goldstein (4)Bohr Ans: (3)Goldstein

Match the name of the phenomenon, Match the name of the phenomenon with the...

Match the name of the phenomenon with the explanation of the phenomenon. Answer: There isn't such thing as orthomagnetism. The prefixes can assist you out with the answ

Prepare heat exchanger, A customer requested the design of a Heat Exchanger...

A customer requested the design of a Heat Exchanger and provided the following information to the Engineering Department. In his factory, as part of the process upgrade, there is a

Illustrate the source of stellar energy, Illustrate the source of stellar e...

Illustrate the source of stellar energy. Describe the carbon-nitrogen cycle and proton - proton cycle occurring in stars. Write down a note on ‘Breeder reactor'.

What is the net displacement of the ball, A soccer ball is kicked from a 22...

A soccer ball is kicked from a 22-m-tall platform. It lands 15 m from the base of the platform. What is the net displacement of the ball?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd