The farad (symbol: F) is the SI unit of capacitance.


A capacitor has a value of one farad when one coulomb of stored charge causes a potential difference of one volt across its terminals. Its equivalent expression in SI base units is:

$ \mbox{F} = \mbox{C} \cdot \mbox{V}^{-1} = \mbox{m}^{-2} \cdot \mbox{kg}^{-1} \cdot \mbox{s}^4 \cdot \mbox{A}^2 = \mbox{C}^2 \cdot \mbox{J}^{-1}. $
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