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The magnetic field intensity and the magnetic induction intensity difference


Magnetic field intensity and the magnetic induction Characterization of the magnetic field strength are nature (that is, the magnetic field strength and direction) of the two physical quantities. As current or magnetic field is caused by movement charge, and magnetic media (except superconductors do not exist outside the concept of magnetic insulation, the magnetic media are all substances) in a magnetic field in magnetic field on the source affect (market principle of superposition ). Therefore, the strength of the magnetic field can be said that there are two methods:
In a uniform magnetic medium circumstances, including if the media because of the magnetic field, and, with magnetic field strength B said its units Tesla T, is a basic physical; separate from the current charge or caused by the movement magnetic field (excluding media magnetization and the magnetic field) with the magnetic field intensity H said its units A/m2, is a physical support.
Specific, B decision by the movement of charge by the Lorentz force, thus, the concept called H B image some more. In engineering, B, also known as magnetic flux density (units Wb/m2). Isotropic in the magnetic medium, the ratio of B and H medium that is the absolute permeability rate.

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