Electromagnets are produced by placing a metal core (usually an iron alloy) inside a coil of wire carrying an electric current.
(Electromagnets; are produced; ) (Electromagnets; by placing; a metal core; inside a coil of wire) (a coil of wire; carrying; an electric current)
Electromagnets Electromagnets a coil of wire
are produced by placing carrying
a metal core inside a coil of wire
an electric current