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Magnetic field (B)

Definition

A magnetic field is a region around a magnet or current-carrying wire where magnetic forces are exerted on other magnets or moving charges.

Related terms

Electromagnetism: Electromagnetism describes the relationship between electricity and magnetism. It explains how electric currents create magnetic fields.

Magnetic Force: Magnetic force is the force exerted on a charged particle or magnet when it moves through a magnetic field.

Magnetic Flux: Magnetic flux measures the quantity of magnetic field lines passing through a given area. It helps us understand how much magnetic field is present in a region.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.