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Electromagnetism
Holt Vocabulary Chapter 18
Term | Definition |
---|---|
Magnetic force | Force between two magnets. |
Poles | Parts of a magnet where the magnetic effects are strongest. |
Galvanometer | Device used to measure current. |
electric motor | Device that changes electrical energy into mechanical energy. |
electromagnet | Produced by a coil of current-carrying wire wrapped around a soft iron core. |
Oersted | Scientist who discovered the relationship between electricity and magnetism. |
induction | During electromagnetic ______, a changing magnetic field produces an electric current. |
maglev | Abbreviation for magnetic levitation. |
domain | A tiny region in a magnet where all atoms are grouped together and their poles are aligned. |
magnetic field | Region around a magnet in which magnetic force can act. |
generator | Device that uses electromagnetic induction to convert mechanical energy into electrical energy. |
solenoid | Coil of wire that, when carrying an electric current, produces a magnetic field. |
transformer | Device that increases or decreases the voltage of an alternating current. |
magnet | Material that attracts iron or materials containing iron. |
ferromagnet | magnet made with iron, nickel, or cobalt. |
Faraday | British scientist who discovered that a changing magnetic field can produce an electric current. |