29.2: Introduction

Physci 101 Lab: Physical Science Laboratory Investigations · LibreTexts

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    From LibreTexts, under CC BY 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    An electromagnet is a coil of conducting wire encircling an iron core that becomes a magnet when electric current is present in the wire. The iron core strengthens the magnetic effect. Electromagnets have a north magnetic pole and a south magnetic pole at the ends of the coil. Alternating current induces a magnetic field, so as long as there is electric current running through the coil, the coil will be magnetic. The magnetic field from the electromagnet forces the domains in the iron core to align, strengthening the overall magnetic effect.

    clipboard_e92ececff042c099a401cc4014488501e.png
    Figure \(\PageIndex{1}\): An Electromagnet.

    This page titled 29.2: Introduction was last modified on Sun, 09 Aug 2026 22:42:17 GMT and is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Teresa Ciardi via source content that was edited to the style and standards of the LibreTexts platform.