What is an electromagnet with a movable core that converts electrical current into mechanical movement?

A solenoid is designed to convert electrical current into mechanical movement by utilizing an electromagnet with a movable core. When electrical current flows through the coil of the solenoid, it creates a magnetic field that pulls or pushes a rod or plunger (the movable core) within it. This motion is often used in various applications such as locking mechanisms, automotive starters, and valves, among others.

The function of a solenoid hinges on its ability to transform electrical energy into linear motion, which is essential for automating processes. The physical movement generated by the solenoid as a response to an electrical signal is what differentiates it from other components that may handle electricity, such as contact switches, relays, and transformers, which do not provide mechanical movement in the same manner.