+A **coil** is a spiral or circular arrangement of material. Often a [Wire](/wiki/wire) wound repeatedly, coils can generate magnetic fields, store [Energy](/wiki/energy), or serve as a flexible connection point. They are fundamental in electrical engineering and mechanical design.
+## See also
+- [Inductor](/wiki/inductor)
+- [Electromagnet](/wiki/electromagnet)
+- [Helix](/wiki/helix)
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