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Ch. 7 Vocab P.S.

Electricity

QuestionAnswer
static electricity The accumulation of excess electric charge on an object.
law of conservation of charge States that charge can be transferred from one object to another but cannot be created or destroyed.
conductor Material, such as copper wire, in which electrons can move easily.
insulator Material in which heat flows slowly.
charging by contact Process of transferring charge between objects by toughing or rubbing.
charging by induction Process of rearranging electrons on a neutral object by bringing a charged object close to it.
electric current The net movement of electric charges in a single direction, measured in amperes.
voltage difference Related to the force that causes electric to flow; measured in volts.
circuit Closed conducting loop through which an electric unit current can flow.
resistance Tendency for a material to oppose electron flow and change electrical energy into thermal energy and light; measured in ohms
Ohm's law States that the current in a circuit equals the voltage difference divided by the resistance.
series circuit Circuit in which electric current has only one path to follow.
parallel circuit Circuit in which electric current has more than one path to follow.
electrical power Rate at which electrical energy is converted to another form of energy; expressed in watts.
Created by: LDinkins
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