| A | B |
|---|
| static electricity | the accumulation of excess electric charge on an object |
| law of conservation of charge | states that the 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 touching 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 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 |
| formula for power | p=iv |
| electroscope | measue presence of electrostatic charge in the body |
| how can an object be charge by induction | rearrangement of electrons on objects |
| how can an object be charge by contact | rubbing against another object cause by near by charge |
| which force is stronger gravation or electric | electric |
