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

State ideal gas equation, All the given four Laws may be written in one rel...

All the given four Laws may be written in one relation,  PV  = nRT =m/n RT   This formula is known as deal gas equation. Where m = mass of the gas M = molecular mass of t

9th, what is dynamics

what is dynamics

Equation affects the magnetic field, Ampere's Law is a relation among cause...

Ampere's Law is a relation among cause and effect. When Ampere's law is write in the form below on which side of the equation is the cause and on which side of the equation is the

Determine the dimension, The control lever is subject to a clockwise moment...

The control lever is subject to a clockwise moment of P26 N.m exerted by its shaft at A and is designed to operate with a force of P27 N.  The resultant of the couple and the force

Electricity, An electric iron draws a current of 0.5A.The voltage is 200V. ...

An electric iron draws a current of 0.5A.The voltage is 200V. Calculate the amount of charge flowing through it in 1 hour.

Force, give some examples of like and unlike parallel forces

give some examples of like and unlike parallel forces

Vectors and 3 Dimensional Forces, 5 example of Classification and 5 types o...

5 example of Classification and 5 types of Vectors and 3 Dimensional Forces

An electric dipole is held in a uniform electric field, An electric dipole ...

An electric dipole is held in a uniform electric field. (1) Using suitable diagram, show that it does not undergo any translatory motion, and (2) derive an expression for the

What is active network, Active network:- It can be described as a net...

Active network:- It can be described as a network, which contains one or more than single source of e.m.f. in it.

Explain the term- zener breakdown, Explain the term- Zener Breakdown ...

Explain the term- Zener Breakdown Under a very high reverse voltage, depletion region expands and potential barrier increases resulting in a very high electric field (3X10 7

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