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A solenoid is a tightly wound helical coil of wire whose diameter is small compared to its length. The magnetic field generated in the centre, or core, of a current-carrying solenoid is essentially uniform and is directed along the axis of the solenoid.
Created by [Animations for Physics and Astronomy](https://www.youtube.com/channel/UCujISSgt4k4A1AwkoXcqXvA). This footage has been used under a [Creative Commons Attribution license](https://creativecommons.org/licenses/by/4.0/legalcode).
Total video duration is 1 minute and 40 seconds.
