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14 Cards in this Set
- Front
- Back
Static electricity
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the accumulation of excess electric charges on an object
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The law of conservation of charge
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charge can be transferred from object to object, but it cannot be created or destroyed
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Insulator
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a material that does not allow electrons to move through it easily
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Conductor
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a material that electrons can move through easily
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Charging by induction
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the rearrangement of electrons on a neutral object caused by a nearby charged object
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Circuit
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a closed conducting path
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Eletric current
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the flow of charges through a wire or any conductor
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Ohm's Law
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the current in a circuit equals the voltage difference divided by the resistance
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Resistance
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the tendency for a material to resist the flow of electrons, changing electric into thermal energy and light
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Series circuit
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the current has only one loop to flow through
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Open circuit
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when any part of a circuit disconnected, no current flows the circuit
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Parallel circuit
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contains two or more branches for current to move through
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Eletrical power
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the rate at which electrical energy is converted to another form of energy
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Kilowatt hour
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1,000 watts used for 1 hour
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