Farad

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In physics, more particulary in electromagnetism, the farad (F) is the SI unit of capacitance,

 \begin{align}	     	 1\; \mathrm{F} &= 1\; \mathrm{C\; V}^{-1} \\                &= 1\; \mathrm{C^2\; J}^{-1} \\                &= 1\; \mathrm{C^2\; N^{-1}\;m^{-1}}, \\ \end{align}

where C is coulomb, V is volt, J is joule, N is newton, and m is meter. A farad is a huge capacitance, so more usual practical units are the microfarad (10−6 F), nanofarad (10−9 F), and picofarad (10−12 F).

The unit is named in honor of Michael Faraday.

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