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18 Cards in this Set
- Front
- Back
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define electric field
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Area over which an electric charge exerts a force.
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define conductor
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Material which permits electrons to flow freely.
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define static electricity
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Movement of charges from one object to another without further movement.
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define seris curcuit
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Curcuit in which all parts are connected one after another; if one part fails to operate properly, the current can still flow through the others.
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define parallel circuit
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Curcuit in which different parts are on separate branches; if one part does not operate properly, current can still flow through the others.
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direct current
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Current consisting of electrons to flow freely.
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define alternating current
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Current consisting of electrons to flow freely.
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define voltage
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Potential difference; energy carried by charges that make up a current.
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define electroscope
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Instrumnent used to detect charge.
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define insulator
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MAterial made up of atoms with tightly bound electrons that are not able to flow freely.
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define friction
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Force that opposes motion that is exerted when two objects are rubbed together in some way.
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define conduction
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Method of charging an object by allowing electrons to flow through one object to another.
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define induction
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Method of charging an object by rearranging its electric charges into groups of positive and negative charge.
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define circuit
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Complete path through which electricity can flow.
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define resistance
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Opposition to the flow of electric charge.
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define fuse
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Thin strip of metal used for safety because when the current flowing through it becomes too high, it melts and breaks the flow of electricity.
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define current
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flow of charge
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define ohm's law
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expression that relates current, voltage and resistance
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