Complex sentence: A solenoid is a coil wound into a tightly packed helix.Solenoid in physics refers to a long, thin loop of wire which when wrapped around a piece of metal, produces a magnetic field when an electric current is passed through it.
Split into simpler sentences: A solenoid is a coil wound into a tightly packed helix. In physics, the term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it.