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

Why like charges repel , It is worth noting that positive charges have line...

It is worth noting that positive charges have lines of forces moving out from them and negative charges have lines of forces entering them.for attraction of charges one charge must

Explain instantaneous acceleration, INSTANTANEOUS ACCELERATION: The acc...

INSTANTANEOUS ACCELERATION: The acceleration of the body at any certain instant during its motion is called to be an instantaneous acceleration.

What are spatial effects, What are spatial effects? Representations of ...

What are spatial effects? Representations of shooting stars, nebulas, comets and others, made with frequently thousands of individual animation illuminator and fibers.

Kilometers, Your car gets 34.7 mi/gal on a trip. How many kilometers/liter ...

Your car gets 34.7 mi/gal on a trip. How many kilometers/liter did it get?

Explain thew laws of physics, Explain thew laws of physics It is though...

Explain thew laws of physics It is thought that the laws of physics do not change from place to place. This is why experiments carried out in different countries by dissimilar

Discovery of neutron becomes very late because, The discovery of neutron be...

The discovery of neutron becomes very late because: (1)Neutrons are present in nucleus (2)Neutrons are highly unstable particles (3)Neutrons are chargeless (4)Neutrons

Dipole moment, what is the electric field when both the charges are same in...

what is the electric field when both the charges are same in dipole

The number of electrons in one molecule of are, The number of electrons in ...

The number of electrons in one molecule of are: (1)22      (2)44      (3)66     (4)88 Ans: 22

Materials for manufacturing of copper clad laminates, MATERIALS: The bas...

MATERIALS: The basic ingredients of a copper clad laminate are: FILLER RESIN COPPER FOIL FILLER: Fillers are incessant webs of materials like paper

Are optical fiber fraglle, Are optical fiber fraglle? Glass fibers are...

Are optical fiber fraglle? Glass fibers are very brittle, actually in any glass light guide there is a percentage of fibers broken throughout the manufacturing process, conver

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