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

Define Irrotational flow, Although it needs not concern us further, we also...

Although it needs not concern us further, we also consider that the flow is irrotational. To check for this property, let a tiny grain of dust goes with the fluid. Although this te

Interferometer, what is michelson''s interferometer

what is michelson''s interferometer

Find total capacity of each container, Containers in Illustrations C and D ...

Containers in Illustrations C and D are identical Each container is 3.25'w x 3.25'w  x 8.4'l Total capacity of each container 88.725 cubic feet Each container is filled wi

Light, If the angle of incidence is 60 degrees,then what is the angle of de...

If the angle of incidence is 60 degrees,then what is the angle of deviation?

With which p-type germanium should be doped, In order to obtain p-type germ...

In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity.      (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will d

What do you understand by sky wave propagation, What are the basic block st...

What are the basic block structure of communication system? What do you understand by sky wave propagation?

Calculate uniform magnetic field, The greatest induced EMF will happen in a...

The greatest induced EMF will happen in a straight wire moving at constant speed by a uniform magnetic field. when the angle among the direction of the wire's motion and the di

Ray optics, a tiny air bubble inside a glass slab appears to be 6 cm deep w...

a tiny air bubble inside a glass slab appears to be 6 cm deep when viewed from one side and 4 cm deep when viewed from other side. find the thickness of slab

How to find gravitational potential energy ?, To work out the gravitational...

To work out the gravitational potential energy of an object the equation is: GPE = m x g x h Where: m = the mass of the object (kg) g = gravitational field strength (on earth tha

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