A magnet formed from an iron core wrapped in current-carrying wire is an?

Question

A magnet formed from an iron core wrapped in current-carrying wire is an?

Answer 1

IT IS CALLED AN ELECTRO-MAGNET.

Answer 2

An electromagnet is a tightly wound helical coil of wire, usually with an iron core, which acts like a permanent magnet when current is flowing in the wire.  The strength and polarity of the magnetic field created by the electromagnet are adjustable by changing the magnitude of the current flowing through the wire and by changing the direction of the current flow.

EDIT:

An electromagnetic coil is formed when a conductor is wound around a core or form to create an inductor or electromagnet.

Answer 3

You are describing an inductor. The magnetic field (magnet) produced by the inductor (iron core wrapped in a current carrying wire) is in the same direction as the current through the coil.  That is to say, if the current enters the coil from the left and leaves to the right, the magnetic flux through the coil (the field lines) will flow through the coil from left to right.  The voltage drop across an inductor is given by the relation: V= -LdI/dt.  The voltage drop is inversely related to the inductance and rate of current of the coil over time.  The inductance, L is determined by the number of turns of wire, magnetic flux through the coil, and current.