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Magnetic field
The strength of a magnetic field H describes the magnitude and direction in which a magnetic force exerts on moving electric charges and magnetic dipoles.
Explanation
A magnetic field penetrates space and exerts a magnetic force on moving electric charges and magnetic dipoles. Magnetic fields surround electric currents, magnetic dipoles, and changing electric fields.
It is a vector quantity that plays a role in electromagnetic field theory.
Example 1
The magnetic field strength occurs in the Maxwell equation of the magnetic flux density
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where
B Magnetic flux density µ0 Magnetic field constant H Magnetic field strength M Magnetization