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In the International System of Units, the unit of B, magnetic flux density, is the tesla (in SI base units: kilogram per second 2 per ampere), [5]: 21 which is equivalent to newton per meter per ampere. The unit of H, magnetic field strength, is ampere per meter (A/m).
- Magnetic flux
The magnetic flux is the net number of field lines passing...
- Magnetic flux
The magnetic flux is the net number of field lines passing through that surface; that is, the number passing through in one direction minus the number passing through in the other direction (see below for deciding in which direction the field lines carry a positive sign and in which they carry a negative sign). [2]
The Biot–Savart law can be used in the calculation of magnetic responses even at the atomic or molecular level, e.g. chemical shieldings or magnetic susceptibilities, provided that the current density can be obtained from a quantum mechanical calculation or theory.
When a magnetic field H has been generated in a medium by a current, in accordance with Ampere's law, the response of the medium is its magnetic induction B, also sometimes called the flux density. Magnetic field, Encyclopaedia Britannica 31)
To further distinguish B from H, B is sometimes called the magnetic flux density or the magnetic induction. The quantity M in these relationships is called the magnetization of the material. Another commonly used form for the relationship between B and H is. B = μ m H. where. μ = μ m = K m μ 0.
The flux can be distributed widely, producing and extended and weak field, or it could be very concentrated, resulting in a strong compact field. There are two measurable parameters that are effected by the flux distribution, these are field strength and flux density.
Magnetic flux density (\({\bf B}\), T or Wb/m\(^2\)) is a description of the magnetic field that can be defined as the solution to Equation \ref{m0005_eFqvB}. Figure \(\PageIndex{4}\): The magnetic field of a bar magnet, illustrating field lines.
