| A | B |
|---|
| 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 |
| circuit | a closed path that an electric current follows |
| conductor | a material in which electrons are able to move easily |
| electric current | the net movement of electric charges in a single direction |
| electrical power | rate at which electrical energy is converted to another form of energy |
| insulator | a material in which electrons are not able to move easily |
| law of conservation of charge | charge can be transferred from object to object, but it cannot be created or destroyed |
| Ohm's law | the current in a circuit equals the voltage difference divided by resistance |
| parallel circuit | contain two or more circuits for a current to move through |
| resistance | is the tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light |
| series circuit | in this kind of circuit , the current has only one loop to flow through . An example is holiday lights and flashlights |
| static electricity | the accumulation of excess electric charge on an object |
| voltage difference | is related to the force that causes electric charges to flow. It is measured in volts. |
