Magnetic Flux

Definition

Magnetic flux is a measure of how much magnetic field passes through a given area. It depends on both the strength and orientation of the magnetic field lines relative to the area.

Analogy

Imagine magnetic flux as rain falling vertically onto an umbrella. If you hold your umbrella flat, more raindrops will hit it compared to if you tilt it at an angle. Similarly, the amount of magnetic flux passing through a surface depends on how perpendicular the magnetic field lines are to that surface.

Related terms

Magnetic Field: A region in space where a magnetic force can be detected.

Faraday's Law: States that a changing magnetic field induces an electromotive force (EMF) and, therefore, an electric current in a conducting loop.

Ampere's Law: Relates the magnetic field around a closed loop to the electric current passing through that loop.