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by Answerbag Staff on October 19th, 2009

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What is a farad capacitor?

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  • by Kevin Boone on October 19th, 2009

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    Great Answer

    Professionally Researched. (What's this?)

    Capacitors are used to store electricity in the form of a static field. Extremely large capacitors can store enough electricity to take the place of batteries.

    The Farad

    The "farad" is the unit of capacitance, or the amount of charge a capacitor can store. The unit is named after Michael Faraday, an English physicist.

    Considerations

    Since the farad is a large unit, most capacitors are labeled with "microfarads" or "picofarads." A microfarad (uF) is one millionth of a farad; a picofarad (pF) is one trillionth of a farad.

    Size

    Older one-farad capacitors used to be huge--at least the size of a coffee can. Modern production processes can shrink the size to less than a cubic inch.

    Fun Facts

    There are 10-farad capacitors available. The price range as of October 2009 is from $115 to $250.

    Warning

    Capacitors can store a lethal charge. Pay attention to the voltage rating and type of capacitor when replacing it.

    Source

    Definition of Farad

    Example of a One-Farad Capacitor

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