What is magnetic field intensity H?

In summary, there are two main concepts related to magnetic fields: magnetic field B, measured in Tesla, and magnetic field intensity H, measured in Ampere/meter. The latter is used to describe the magnetic fields generated by currents passing through magnetic materials, which can cause confusion with the contribution of the material itself. The source of magnetic fields can come from both external currents and internal materials.
  • #1
rizwan_20
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Hi all,
My question is, in electromagnetism, magnetic field intensity H is equivalent to electric field intensity E , right??
Now, definition of E says that E is the force experienced by an unit positive charge in an electric field created by a source charge.
So what is the definition for magnetic field intensity, H??. Is it something like that if we place a magnetic monopole in a magnetic field, the force that it experiences is called H?? I am really confused here...
Thanks in advance
 
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  • #2
rizwan_20 said:
Hi all,
My question is, in electromagnetism, magnetic field intensity H is equivalent to electric field intensity E , right??
Now, definition of E says that E is the force experienced by an unit positive charge in an electric field created by a source charge.
So what is the definition for magnetic field intensity, H??. Is it something like that if we place a magnetic monopole in a magnetic field, the force that it experiences is called H?? I am really confused here...
Thanks in advance
Here is a discussion of magnetic field and magnetic field intensity/strength.

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magfield.html
The magnetic fields generated by currents and calculated from Ampere's Law or the Biot-Savart Law are characterized by the magnetic field B measured in Tesla. But when the generated fields pass through magnetic materials which themselves contribute internal magnetic fields, ambiguities can arise about what part of the field comes from the external currents and what comes from the material itself. It has been common practice to define another magnetic field quantity, usually called the "magnetic field strength" designated by H.
http://hyperphysics.phy-astr.gsu.edu/hbase/solids/magpr.html

Here is a discussion on the sources of magnetic fields.
http://web.mit.edu/8.02T/www/802TEAL3D/visualizations/coursenotes/modules/guide09.pdf
 
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Related to What is magnetic field intensity H?

1. What is magnetic field intensity H?

Magnetic field intensity H, also known as magnetic field strength or magnetic flux density, is a measure of the strength of a magnetic field at a specific point. It is defined as the force that a unit north pole would experience when placed in a magnetic field.

2. How is magnetic field intensity H measured?

Magnetic field intensity H is measured using a device called a magnetometer. This instrument detects the strength of the magnetic field and displays the value in units of tesla (T) or gauss (G).

3. What factors affect the magnetic field intensity H?

The magnetic field intensity H is affected by several factors, including the strength and direction of the current, the distance from the source of the magnetic field, and the permeability of the material the field is passing through.

4. Why is magnetic field intensity H important?

Magnetic field intensity H is important because it helps us understand and measure the strength of magnetic fields, which play a crucial role in various natural phenomena and technological applications. It is also a key factor in determining the behavior of magnetic materials.

5. How is magnetic field intensity H different from magnetic flux density?

Magnetic field intensity H and magnetic flux density are related but different quantities. Magnetic field intensity H is a measure of the force on a unit north pole, while magnetic flux density is a measure of the number of magnetic field lines passing through a unit area. H has units of A/m, while flux density has units of tesla (T) or gauss (G).

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