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Chapter 7

Vocab

TermDefinition
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 an move easily
insulator material in which electrons are not able to move easily
charging by contact process of transferring charge between objects by touching or rubbing.
electric current the net movement of electric charges in a single direction, measured in amperes.
voltage difference related to the force that causes electric charges to flow; measured in volts
circuit closed conducting loop through which an electric 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.
charging by induction process of transferring charge between objects by touching or rubbing
Created by: mirandaperkins