One farad is equal to one coulomb of electric charge stored per volt of potential difference across a capacitor. In simpler terms, a capacitor has a capacitance of one farad when it can store one coulomb of charge for every volt applied across it. This unit is named after the physicist Michael Faraday.
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Farad is a unit of capacitance - to measure the capacity of devices called capacitors. Farad means coloumb/voltage, in other words, if the capacitor has a capacity of 1 farad, it will store a charge of 1 coloumb for every volt. This is a huge unit; real capacitors are usually specified in microfarad, nanofarad or picofarad.
c=Q/v and v=IR SO C=Q/IR I=Q/T SO C=QT/QR Q CANCELS SO C=T/R AND R MULTIPLY BY C =T SO FARAD MULTIPLY OHM =SECOND
approx equal to (2 x 10^(-4) to 0.01) x large ultracapacitor capacitance (100 to 5000 F)
The prefix "p" means "pico" - a millionth of a millionth of something. Therefore, 100 pF is 100 x 10-12 Farad, equal to 10-10 Farad. Since a Farad is, for most practical purposes, an extremely large unit, prefixes like micro, nano and even pico are often used with it.
second squared !
One times one equal one.