Magnetic core

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Notion

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Science and technology

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What Wikipedia says

A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets, transformers, electric motors, generators, inductors, loudspeakers, magnetic recording heads, and magnetic assemblies.

Excerpt from the Wikipedia article “Magnetic core”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: E. Leybold's Nachfolger AG (costruttore), CC BY-SA 4.0, via Wikimedia Commons.