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

Passing lane, Passing Lane A passing lane or overtaking lane is the lan...

Passing Lane A passing lane or overtaking lane is the lane on a multi-lane highway or motorway closest to the center of the road or the central reservation.

P2 work, what is the tension in the string when the block is lifted at a st...

what is the tension in the string when the block is lifted at a steady speed when the weight weighs 4.5N and the distance is 90cm

Experiment of a simple tripod, A simple tripod A useful tripod can be m...

A simple tripod A useful tripod can be made by cutting away the sides of a tin can. It is suitable to make two or three of these to suit dissimilar burners and for use as stand

Resistors in dc circuits, Resistors in dc circuits: Components are said...

Resistors in dc circuits: Components are said to be in series when they are connected end-to-end providing only one path for the current.  Thus the same current passes through

What do you mean by dopplers shift, What do you mean by Doppler's shift? De...

What do you mean by Doppler's shift? Derive a mathematical expression for the apparent frequency heard by a moving listener when the source of sound is at rest. What is the effe

Forces, Forces: If a Force is applied to a body, it will cause that bod...

Forces: If a Force is applied to a body, it will cause that body to move.  A body that is already moving will change its speed or direction.  Note that the term 'change its spe

Find the speed of the wave, Find the speed of the wave A copper wire, wh...

Find the speed of the wave A copper wire, whose cross-sectional area is 1.1 x 10 -6  m 2 has a linear density of 7.0 x 10 -3 kg/m and is sturng between two walls. At the ambient

Determine concept of pressure, A woman wearing high heels briefly supports ...

A woman wearing high heels briefly supports all her weight on the heels. If her mass is 45 kg and each heel has an area of 1.2 cm 2 , what pressure does she exert on the floor

air gap in between the parallel plates, How is that circuit wont be broken...

How is that circuit wont be broken even there is an air gap in between the parallel plates? Ans) In AC circuit capacitor offers resistance to current as aresistor would do in DC.

Who manufactures optical ports, Who manufactures optical ports?  All sy...

Who manufactures optical ports?  All system integrator generate a particular type of optical port to attach to their choice of illuminator.

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