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Electricity
Term | Definition |
---|---|
amphere | the unit used to describe how much electric current flows through a wire |
circuit | a path for electric current |
closed circuit | a complete, unbroken path for electric current |
electric current | movement of electrons from one place to another |
open circuit | an incomplete or broken path for electric current |
static electricity | buildup of electrical charges |
conductor | material through which electricity passes easily |
insulator | material through which electricity does not pass easily |
resistance | measure of how easily electric current will flow through a material |
alternating current | current that changes direction regularly |
direct current | current that flows in one direction |
dry-cell battery | electric power source with a dry or paste-like center |
electromotive force | the push that keeps the current (electrons) flowing in an electric circuit |
terminal | points where electrons leave or enter a battery |
volt | the metric unit used to measure electromotive force that tells the amount of push |
voltage | the energy that a power source gives to electrons in a circuit |
wet-cell battery | electric power source with a liquid center |
series circuit | a circuit in which all current (electrons)flows through a single path |
ohm's law | current equals voltage divided by resistance |
parallel circuit | a circuit in which there is more than one path for current |
electric power | the rate at which electrical energy is used |