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ps chapter 7 vocab
vocab
Term | Definition |
---|---|
static electricity | the accumulation of excess electric charge on an object is called static electricity |
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 | 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 |
electric current | the net movement of electric charges in a single direction |
voltage difference | is related to the force that causes electric charge flow |
circuit | a closed path that electric current follows |
resistance | is the 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 circuit | circuit in which electric current has only one path of follow |
parallel circuit | contains two or more branches for current to move through. |
electrical power | the rate at which electrical energy is converted to another form of energy is the electric power. |