Chapter 20 terms
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Place where the magnetic force is strongest
Magnetic Poles
A force of attraction or repulsion between poles of two magnets
Magnetic force
Any material strongly attracted to a magnet
Magnetic material
elements including iron, nickel, and cobalt that have an especially strong attraction to magnets.
Ferromagnetic elements
The region in a magnetic material in which the magnetic fields of an atom all point in the same direction
Magnetic domain
Magnet that quickly loses its magnetic field after being removed from a magnetic field
Temporary magnet
Remains a magnet after being removed from another magnetic field
Permanent Magnet
Magnet created by wrapping a current-carrying wire around a ferromagnetic core
Electromagnet
A device that uses an electromagnetic current to produce motion
electric motor
A device that uses a magnetic field to transform mechanical energy to electric energy
Electric generator
An electric current that flows in one direction
direct current
An electric current that changes direction in a regular pattern
alternating current