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# Electronics

### Electronics Part 2

Question | Answer |
---|---|

What is resistance? | Opposition to the flow of current. |

Opposition to the flow of current is known as _______. | Resistance. |

What tool is used to measure resistance? | Ohmmeter |

What is one unit of electrical resistance called? | Ohm |

What is an ohm? | An ohm is the amount of resistance that will allow one ampere of current to flow if one volt of electrical pressure is placed on a conductor. |

What is the symbol for an ohm? | Ω |

Most cable and wire is currently made from _______. | Copper |

What does Ohm's law state? | Ohm's Law states that voltage in volts is equal to the current in amperes multiplied by the resistance in ohms. |

What is the formula for Ohm's law? | E=I*X |

In Ohm's law, what does each letter represent? | E = Voltage I = Current R = Resistance |

What does mA stand for? | Milliamphere |

What is a milliampere? | A milliamhere is 1/1000 of an ampere. |

How can a milliampere be converted to an ampere? | By moving the decimal point three places to the left. Example: 500 mA would be the same as .5 A |

What is a kilohm? | A Kilohm (KΩ) is 1,000 ohms. |

What is the symbol for a kilohm? | KΩ |

What is a megohms? | A megohm (MΩ) is 1,000,000 ohms. |

What is the symbol for a megohm? | MΩ |

How can a kilohm be converted into an ohm? | Move the decimal point three places to the right. 6 KΩ would then become 6,000 Ω. |

How can a megohm be converted to an ohm? | Moving the decimal point 6 places to the right. 10MΩ would the become 10,000,000 |

What is a millivolt? | A millivolt is the same as 1/1000 of a volt. |

What is the symbol for a millivolt? | mV |

How can a millivolt be converted to a volt? | Move the decimal point 3 places to the left. 1000mV would be the same as 1 V. |

What does KV stand for? | Kilovolt. |

What does MV stand for? | Megavolts. |

Created by:
Cheetahman