Electromagnet

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Electromagnet is a temporary magnet formed when electric current flows through a wire or other conductor. Most electromagnets consist of wire wound around an iron core. This core is made from magnetically soft iron that loses its magnetism quickly when the electric current stops flowing through the wire.

Inductance

Inductance is a property of an electric circuit that opposes any change in the current flowing in that circuit. A magnetic field surrounds every… See more »

Lenz's law

Lenz's, LEHN zuhz or LEHNT suhz, law is a principle that relates magnetism to electric current, describing the direction of a current produced by a… See more »

Hall effect

Hall effect is an electrical phenomenon that occurs when a current flows through a material in a magnetic field. For example, if a material has a… See more »

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Electromagnet

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