+A **solenoid** is a helix of wire creating a controlled [Magnetic Field](/wiki/magnetic_field) when an [Electric Current](/wiki/electric_current) flows. This simple device transforms electrical energy into linear mechanical force, essential for many automatic functions.
+## See also
+- [Electromagnetism](/wiki/electromagnetism)
+- [Inductance](/wiki/inductance)
+- [Actuator](/wiki/actuator)
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