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science ch6voc
| Question | Answer |
|---|---|
| Static electricity | the accumulation of excess electrical charge on an object |
| Law of conservation of change | states that charge can be transferred from object to object,but it cannot be created or destroyed |
| Electric field | surrounds every electric charge and exerts the 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 |
| Charging by contact | is 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 | is a device that can detect electric charge |
| Electric current | is the net movement of electric charges in a single direction |
| Voltage difference | is related to the force that causes electric charges to flow |
| electric circuit | a closed path that electric current follows |
| Resistance | the tendency for a material to resist the flow of electrons and to convert electrical energy into other forms of energy,such as thermal energy |
| Ohm’s law | the current in a circuit equals the voltage difference divided by the resistance |
| series circuit | an electric circuit with only one branch |
| Parallel circuit | contain two or more branches for current |
| Electrical power | is the rate at which electrical energy is converted to another form of energy |
Created by:
amgrace