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### 20 Cards in this Set

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 the law that states that like charges repel and opposite charges attract law of electric charges the force between charged objects electric force the region around a charged object in which an electric force is exerted on another charged object electric field a material in which charges can move easily conductor a material in which charges cannot easily move insulator the build up of electric charges on an object static electricity the lost of static electricity as charges move off an object electric discharge a device that produces an electric current by converting chemical energy into electrical energy cell a device that is made of one or more cells and converts chemical energy into electrical energy battery the energy per unit charge; specifically, the difference in energy per unit charge as charge moves between two points in the path of a current (same as voltage); expressed in volts potentical difference the part of a solar panel that converts light energy into electrical energy photocell a device that converts thermal energy into electrical energy thermocouple a continuous flow of charge caused by passes a given point; expressed in amperes current the difference in energy per unit charge as a charge moves between two points in the path of a current (same as potentical difference); expressed in volt voltage the opposition to the flow of electric charge; expressed in ohms resistance the rate at which electrical energy is used to do work electric power a complete, closed path through which electric charges flow circuit a device that used electrical energy to do work load a circuit in which all parts are connected in a single loop series circuit a circuit in which each load is placed on a separate branch parallel circuit