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An electric coil is a circular or spiral-shaped coil of wire specially designed to produce a magnetic field or induce an electric current. This coil is one of the important components in various electronic and electromagnetic applications. Electric coils can come in many shapes, sizes, and purposes depending on the application.
In some applications, an electric coil is used to produce a magnetic field when an electric current flows through it. An example is a solenoid, in which an electric coil wrapped around a metal core can create a strong magnetic field when an electric current flows. Solenoids are used in various equipment and systems, such as solenoid valves, electromagnetic relays, and so on.