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9 Cards in this Set
- Front
- Back
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communication
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a process by which information is exchanged between individuals through a common system of symbols, signs, or behavior
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circuit
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the complete path of an electric current including usually the source of electric energy
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charge
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a definite quantity of electricity
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electricity
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a fundamental form of energy observable in positive and negative forms that occurs naturally (as in lightning) or is produced (as in a generator) and that is expressed in terms of the movement and interaction of electrons
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electromagnet
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a core of magnetic material (as iron) surrounded by a coil of wire through which an electric current is passed to magnetize the core
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battery
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a group of two or more cells connected together to furnish electric current
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telegraph
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an apparatus for communication at a distance by coded signals; especially : an apparatus, system, or process for communication at a distance by electric transmission over wire
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semaphore
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an apparatus for visual signaling (as by the position of one or more movable arms)
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cable
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a wire or wire rope by which force is exerted to control or operate a mechanism
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