Microfarads

Farad
A one farad modern super-capacitor. The scale behind is in inches (top) and centimetres.
Unit information
Unit system	SI derived unit
Unit of	Capacitance
Symbol	F
Named after	Michael Faraday
In SI base units:	s4⋅A2⋅m−2⋅kg−1

The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge. It is named after the English physicist Michael Faraday.

One farad is defined as the capacitance across which, when charged with one coulomb, there is a potential difference of one volt. Equally, one farad can be described as the capacitance which stores a one-coulomb charge across a potential difference of one volt.

The relationship between capacitance, charge and potential difference is linear. For example, if the potential difference across a capacitor is halved, the quantity of charge stored by that capacitor will also be halved.

For most applications, the farad is an impractically large unit of capacitance. Most electrical and electronic applications are covered by the following SI prefixes:

A farad is represented in terms of SI base units as s⁴⋅A²⋅m⁻²⋅kg⁻¹

It can further be expressed as:

where F = farad, A = ampere, V = volt, C = coulomb, J = joule, m = metre, N = newton, s = second, W = watt, kg = kilogram, Ω = ohm, Hz = hertz, H = henry.