1. Electromagnetism Tutor - Magnetic Flux and Gauss Law
Magnetic Flux and Gauss Law. The flux associated with a magnetic field is therefore a measure of the number of magnetic field lines penetrating some surface.

2. Magnetic Flux -- from Eric Weisstein s World of Physics
Magnetic Flux -- from Eric Weisstein s World of Physics. Measuring the magnetic field passing through a cross sectional area S gives the magnetic flux , where B is the magnetic field vector, and is a differential unit of area pointing perpendicular to the surface S. Knowing allows the electromotive force produced in a current ring with S as its boundary to be computed using Faraday's law as

3. Magnetic Flux
Magnetic flux is the product of the average magnetic field times the perpendicular area that it penetrates. It is a quantity of convenience in the statement of Faraday's Law and in the discussion of objects like transformers and solenoids. In the case of an electric generator where the magnetic field penetrates a rotating coil, the area used in defining the flux is the projection of the coil area onto the plane perpendicular to the magnetic field.

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