# Question: What Is Relation Between B And H?

## What is a BH curve?

The B-H curve is generally used to describe the nonlinear behavior of magnetization that a ferromagnetic material obtains in response to an applied magnetic field..

## Where is magnetic field strongest?

centerThe magnetic field is strongest at the center and weakest between the two poles just outside the bar magnet. The magnetic field lines are densest at the center and least dense between the two poles just outside the bar magnet.

## Which material is most suitable for permanent magnet?

The most common metals used for permanent magnets are iron, nickel, cobalt and some alloys of rare earth metals. There are two types of permanent magnets: those from “hard” magnetic materials and those from “soft” magnetic materials. “Hard” magnetic metals tend to stay magnetized over a long period.

## What does H represent in magnetism?

The definition of H is H = B/μ − M, where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization. …

## How is electromagnetic strength calculated?

You can determine the magnitude of that force by plugging the dimensions and other properties of the magnet based into a simple equation: F = (n X i)2 X magnetic constant X a / (2 X g2).

## Where is the weakest part of a magnetic field?

The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.

## Where is Earth’s magnetic field the weakest?

equatorThe intensity of the magnetic field is greatest near the magnetic poles where it is vertical. The intensity of the field is weakest near the equator where it is horizontal. The magnetic field’s intensity is measured in gauss. The magnetic field has decreased in strength through recent years.

## What is B in magnetic field?

Actually, B is to represent the bi-polar field as the magnetic field is always bi-polar. As of date, mono-polar magnet doesn’t exist. So, the term “B” means the bi-polar field intensity (density).

## Which unit is Tesla?

magnetic flux densityThe tesla (symbol T) is the derived SI unit of magnetic flux density, which represents the strength of a magnetic field. One tesla represents one weber per square meter.

## Can we see magnetic flux lines?

At each end of a magnet is a pole. These lines of flux (called a vector field) can not be seen by the naked eye, but they can be seen visually by using iron fillings sprinkled onto a sheet of paper or by using a small compass to trace them out.

## What is retentivity and coercivity?

Define Coercivity And Retentivity. Coercivity is defined as the minimum value of magnetising intensity that is required to bring the material to its original state. … The ability of the magnetic field remaining in the material even after removing the external source is known as Retentivity.

## What is the weakest part of a magnetic field?

The magnetic field is weakest along the surface in the middle of the side of the magnet. This is a close-up of the field at the North pole.

## What is the difference between B and H fields?

B is the magnetic flux density and is unique to the material. Higher μc means more magnetic flux density under the same magnetic field. H is the magnetic field strength and is an absolute quantity.

## Why BH curve is not linear?

In free space (also nonmagnetic materials), the permeability μ0 is constant so that BH Curve Relationship is linear. This, however, is not the case with ferromagnetic materials used in electric machines, wherein the BH Curve Relationship is strictly nonlinear in two respects saturation and hysteresis.