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12 Cards in this Set
- Front
- Back
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Magnetism
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refers to the properties and interactions of magnets
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Magnetic poles
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where the magnetic force exerted by the magnet is the strongest
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Magnetic domains
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groups of atoms with aligned magnetic poles
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Electromagnet
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a temporary magnet made by placing a piece of iron inside a current carry coil of wire
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Galvanometers
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are devices that use an electromagnet to measure electric current
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Electric motor
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a device that changes electric energy into mechanical energy
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Electromagnetic induction
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producing an electric current by moving a loop of wire through a magnetic field or moving a magnet through a wire loop
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Generator
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produces electric current by rotating a coil of wire in a magnetic field
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Turbine
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a large wheel that rotates when pushed by water, wind or steam
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Direct current
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flows in only one direction through a wire
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Alternating current
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reverses the direction of the current flow in a regular
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Transformer
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a device that increases or decreases the voltage of an alternating current
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