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Chapter 7 vocab
Term | Definition |
---|---|
static electricity | the accumulation of excess electric charge on an object |
law of conservation of charge | charge can be transferred from object to object but it cannot be created or destroyed |
conductor | a material in which electrons are able to move easily |
insulator | a material in which electrons are not able to move easily |
charging by contact | 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 |
electric current | the net movement of electric charges in a single direction. |
voltage difference | related to the force that causes electric charges to flow; measured in volts |
circuit | a closed path that electric current flows |
resistance | tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light |
Ohm's law | the current in a circuit equals the voltage difference divided by the resistance. |
series ciruit | current has only one loop to flow through. |
parallel circuits | contain two or more branches for current to move through |
electric power | the rate at which electrical energy is converted to another form of energy. |