| A | B |
|---|
| law of electric charges | the law that states that like charges repel and oppsite charges attract |
| electric force | the force between charged objects |
| conduction | a method of charging an object that occurs when electrons are transferred from one object to another by direct contact |
| induction | a method of charging an object that occurs when charges in an uncharged object are reattanged without direct contact with a charges object |
| conductor | a material in which charges can move easily |
| insulator | a material in chich charges cannot move easily |
| static electricity | the buildup of electric charges on an object |
| electric discharge | the loss of static electricity as charges move off an object |
| cell | a device that produces an electric current by converting chemical energy in to electrical energy |
| battery | a device that is made of several cells and that produces an electric current by converting chemical energy in to electrical energy |
| potential difference | energy per unit charge; specifically, the difference in energy per unit charge as a charge moves between two points as an electric circuit; expressed in volts |
| photo cell | the part of a solar panel that converts light into electrical energy |
| thermocouple | a device that converts thermal energy into electrical energy |
| current | the rate at which charge passes a given point; expressed in amperes |
| voltage | the difference in energy per unit charge as a charge moves between two points in an electric circuit; expressed in volts |
| resistance | the opposition to the flow of electic charge; expressed in ohms |
| electric power | the rate at which electrical energy is used to do work; expressed in watts |
| circuit | a complete, closed path through which electric charges flow |
| load | a device that uses electrical energy to do work |
| series circuit | a circuit in which all parts are connected in a single loop |
| parallel circuit | a circuit in which different loads are located on separte branches |
