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Ch 6 Electricity

static electricity the accumulation of excess electric charge on an object
law of conservation of charge Charge can be transferred from object to object, but cannot be created or destroyed.
Electric field The area surrounding electric charge that exerts force that causes other electric charges to be attracted or repelled.
Conductor a material through which electrons move easily.
Insulator a material in which electrons are not able to move easily; atoms hold electrons tightly
Charging by contact the process of transferring charge by touching or rubbing
Charging by induction the rearrangement of electrons on a neutral object caused by a nearby charged object
Electroscope a device that can detect electric charge
Electric current the net movement of electric charges in a single direction (electrical flow)
voltage difference the difference in electric potential energy between two points. (electrical "push")
electric circuit a closed path that electric current follows.
resistance The tendency for a material to resist the flow of electrons and convert electrical energy into other forms such as thermal. (measured in ohms)
Ohm's Law Describes the relationship between voltage difference, current and resistance in a circuit. I = V/R
Created by: PRO Teacher jhaase