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

Number of neutron, Number of neutron in C 12   is (1)6 (2)7      ...

Number of neutron in C 12   is (1)6 (2)7      (3)8 (4)9 Ans: (1)6

Calculate the overall heat loss coefficient, Calculate the overall heat-los...

Calculate the overall heat-loss coefficient for a solar collector with a single glass cover having the following specifications (neglect edge effects): Spacing between the plate

Coriolis pseudoforce, Coriolis pseudoforce (G. de Coriolis; 1835) A ps...

Coriolis pseudoforce (G. de Coriolis; 1835) A pseudoforce that arises due to motion relatively a frame which itself rotating relatively second, inertial frame. The magnitude o

2d representation of the diamond unit cell, 2D representation of the diamon...

2D representation of the diamond unit cell In a 2D projection of the diamond unit cell, the base plane of the unit cell ABCD is shown by a square and the atoms in the base pla

Gel and emulsions, WHAT IS THE RELATION B/W GEL AND EMULSION? WHAT ARE THE ...

WHAT IS THE RELATION B/W GEL AND EMULSION? WHAT ARE THE CLASSIFICATIONS?AND FEATURES OF GELS AND ASLO EMULSIONS

Banking of road, what do you mean by banking of roads?why is it done?a trai...

what do you mean by banking of roads?why is it done?a train has to negotiate a curve of radius 400m.by how must the outer rail is raised as compared with the inner rail for a speed

Two simple harmonic motions have the same periodic time, When the two simpl...

When the two simple harmonic motions have the same periodic time but different amplitude and a phase dissimilarity = ∏/2: The resultant curve may be attained graphically as abov

Beer lambert''s law, what is meant by positive deviation of beer lambert''s...

what is meant by positive deviation of beer lambert''s low?

Use of magnesium alloys, Magnesium is the lightest of the structural metals...

Magnesium is the lightest of the structural metals.  While this low density is an attractive property, magnesium also has a high corrosion rate that has often been seen as a disadv

Assignment topic.., How we can increase the data input from 4 to 8 of multi...

How we can increase the data input from 4 to 8 of multipluxer and data outputs from 4to 8 of demultipluxer? Properly draw circuit diagram

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