What is a farad capacitor?
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The Curious Bag
ANSWERS: 1
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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
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