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9 Cards in this Set

  • Front
  • Back
commutator
the reversing switch that rotates with an electromagnet.
generator
a device that produces an electric current by rotating a loop of wire in a manetig field.
magnetism
the property of matter in which there is a force of attraction or repulsion between two like or unlike poles.
magnetic domains
groups of alligned atoms in a magnet
direct current
current that flows in only one direction.
electromagnetic
when a current is passed through a coil of wire.
transformer
a device used to increase or decrease the voltage of a power line.
magnetic field
Area around a magnet where the magnetic force acts.
alternating current
when current in a circiute reverses in a regular pattern.