What is magnetic field intensity H?

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SUMMARY

Magnetic field intensity, denoted as H, is a distinct concept in electromagnetism, separate from electric field intensity E. While E represents the force on a unit positive charge in an electric field, H quantifies the magnetic field strength generated by currents, as defined by Ampere's Law and the Biot-Savart Law. H is particularly useful in contexts where magnetic materials influence the overall magnetic field, allowing for clearer differentiation between external and internal magnetic contributions. Understanding H is essential for analyzing magnetic fields in various applications.

PREREQUISITES
  • Basic understanding of electromagnetism principles
  • Familiarity with Ampere's Law
  • Knowledge of the Biot-Savart Law
  • Concept of magnetic materials and their properties
NEXT STEPS
  • Study the relationship between magnetic field intensity H and magnetic flux density B
  • Explore the applications of Ampere's Law in circuit analysis
  • Learn about the effects of magnetic materials on magnetic fields
  • Investigate the concept of magnetic monopoles and their theoretical implications
USEFUL FOR

Students of physics, electrical engineers, and professionals working with electromagnetic systems will benefit from this discussion, particularly those interested in the nuances of magnetic field theory and its applications.

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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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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