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# electrical vocab

Term | Definition |
---|---|

voltage | That force which is generated to cause current to flow in an electrical circuit. It is also referred to as electromotive force or electrical potential. It is measured in volts. |

ohm | the practical meter-kilogram-second unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere |

resistor | A device usually made of wire or carbon which presents a resistance to current flow. |

Ohm's law | states that when an electric current is flowing through a conductor, such as a wire, the intensity of the current equals the electromotive force driving it, divided by the resistance of the conductor. |

watt | A unit of measure for indicating the electrical power applied in a circuit. |

Conductor | electric current can flow freely |

Parallel circuit | A circuit in which the circuit components are arranged in branches so that there is a separate path to each unit along which electrical current can flow. |

Coulomb | the SI unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere. |

Hertz | a unit of frequency equal to one cycle per second |

Transistor | A device constructed of semi - conductors that is used in circuits to control a larger current by using a smaller current for operation. |

Resistance | The opposing or retarding force offered by a circuit or component of a circuit to the passage of electrical current through it. It is measured in ohms. |

AC current | an electric current which periodically reverses direction |

DC current | an electrical current that flows only in one direction. |

Electrical Ground | an electrical conductor placed in the ground or earth to protect consumers from unfortunate electrical shocks and to provide return path for electrical current |

Insulator | A substance or body that resists the flow of electrical current through it. |

Joules(electrical) | the unit of energy |

Capacitor | A device which stores electrical energy. Commonly used for filtering out voltage spikes. |

Amp | A device of electronic components used to increase power, voltage, or current of a signal. |

Series circuit | A circuit in which the parts are connected end to end, positive pole to negative pole, so that only one path is provided for current flow. |

Circuit | a path in which electrons from a voltage or current source flow |