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20 Cards in this Set
- Front
- Back
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electric field
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an area surrounding an electron that exerts a force on anything near by.
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conductor
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a material that allows electrons to move easily through it.
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insulator
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a material that doesnt allow electrons to move through it easily.
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electroscope
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made of two thin metal leaves attached to a metal rod with a knob at the top.
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current
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the flow of electrons through a wire or any conductor
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circuit
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a closed path through which electrons can flow.
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dry cell
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can act as a nelectron pump because it has potential difference between the positive and negative terminals.
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electrical power
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the rate at whcih electrical energy is converted to another form of energy.
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ampere
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SI unit of electrical current.
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watt
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SI unit for power.
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Ohm
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SI unit of electrical resistance.
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Wet Cell
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Contains two connected plates made of different metals or metallic compounds in an electrolyte solution.
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Volt
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SI unit for potential difference.
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Static Electricity
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The net accumulation of electric charges on an object.
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Series Circuit
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The current has only one path it can travel along.
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Resistance
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The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy.
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Potential Difference
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The difference in potential between two different places, and is measured in volts.
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Parallel Circuits
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Contain separate branches of current to move through.
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Ohms Law
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States that potential difference equals current times resistance.
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Kilowatt-Hour
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Unit of electrical energy.
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