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# 2C studying lab

### studying for final

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

To miniaturize ca p acitors, y et maintain ca p acitance Purpose of Dielectrics py p the space between the plates of a capacitor are filled with a | dielectric material |

What is the purpose of adding a dielectric to a capacitor? | Dielectric is placed between two conductors to create a capacitor. It keeps the carriers of electric charge (electrons or ions) from moving from one conductor to another, thus maintaining difference of potentials. |

What does an inductor do? | An inductor allows passage of DC current but resists AC. while a capacitor's purpose is to store voltage, an inductor's purpose is to store current. Charges cant move freely through |

What are conductors? | objects in which charges can move freely through |

Power dissipated by a resistor | P sub L (loss) = I^2 * R (power lost in a conductor) |

Power Transmitted | P sub T = IV |

To find capacitance in parallel plate capacitor what is the formula for C? | C = Epsilon naught * Epsilon sub R * (A/d) |

Units for capacitance? | Farads |

Units for farads? | second/ohm , C^2/Nm , C/V , J/V^2 |

What is AC current? | alternating current that reverses at random times |

What is DC current? | Direct current. Pos and Neg terminals with (+) and (-) always, respectively. |

LCR meter measures what and in what units? | Capacitance in Farads |

DMM measures what and in what units? | Resistance in Ohms |

What is the constant relative permittivity? | epsilon sub R |

What is resistance proportional to? | Length of wire |

What is Kirchoffs Law? | 1) Iin = Iout 2)Sum of V difference in ANY loop = 0 |

What is resistance? | measurement of how much an object resists current flow. |

Capacitors store what kind of energy? | Electric |

how are capacitors determined? | Geometric effect. (area, diameter, dielectric) |

What is Faraday's Law? | Magnetic Flux changes so |

what is the dielectric constant and its formula | K = C of dielectric / C of vacuum |

what is C of dielectric constant formula | C dielec = K * epsilon naught * (A/D) |

What is dielectric constant of a vacuum | 1 |

What is dielectric constant of air | 2 |