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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 |