Magnetic flux is a concept in physics that refers to the flow of magnetism through a given area. It is typically measured in units of webers (Wb), and its SI unit is the tesla meter2 (T·m2). The magnetic flux density, often simply called magnetic flux, is a measure of how much magnetic field passes through a given surface. The SI unit for measuring magnetic flux density is the tesla (T).
One way to think about magnetic flux is as “magnetic field lines per unit area.” The number of field lines passing through an imaginary surface drawn perpendicular to the direction of the field defines the magnitude of the Magnetic Flux. If those same field lines were parallel to the surface, then there would be no net Magnetic Flux because each line would cancel with an equal but opposite line on the other side of the surface.
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