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# Ch.8

### Chapter 8 vocab

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

Amperes | Unit for measuring electric current; very small currents are measured in milliamperes |

Circuit Diagrams | A drawing using symbols to represent the different components of a circuit |

Current Electricity | The continuous flow of charge in a complete circuit |

Electric Circuit | A complete pathway that allows electrons to flow |

Electric Current | The amount of charge passing a point in a conductor every second |

Electric Load | Any device that transforms electrical energy into other forms of energy, such as light bulb, buzzer, heater, and motor |

Electric Potential Energy | Electric energy stored in a battery |

Electrical Resistance | The ratio of voltage to current |

Electrochemical Cell | Electrodes in electrolytes that convert chemical energy into electrical energy stored in charges; also called batteries |

Electrodes | Two terminals in a battery or other electricity source; usually made of two different metals but can be a metal and another material |

Electrolyte | Substance that conducts an electric current. In a dry cell, the electrolyte is a moist paste; in a wet cell, the electrolyte is a fluid |

Energy | The ability to do work |

Ohm | The unit of measurement for electrical resistance |

Ohm's Law | The mathematical relationship comparing voltage (v), current (I), and resistance (R), written as R=V/I |

Potential Difference | The amount of electric potential energy per one coulomb of charge at one point in a circuit compared to the potential energy per coulomb of charge at another point in the circuit; also called Voltage |

Resistance | The property of any material that slows down the flow of electrons and converts electrical energy into other forms of energy |

Resistor | An electrical component with a set amount of resistance that slows down current and transforms electrical energy into other forms of energy |

Volt | The unit of potential difference |

Voltage | The amount of electric potential energy per one coulomb of charge at one point in a circuit compared to the potential energy per coulomb of charge at another point in the circuit |