So a capacitor with a capacitance of 1 farad can hold an enormous amount of charge, and that’s why it’s considered a big unit. The farad is a unit of electrical capacitance and is defined as the amount of capacitance that stores one coulomb of charge when a potential difference of one volt is applied.
Drawing of a capacitor with the capacitance, 400 microfarads, that is 0.000 004 farads. The farad is a unit of capacitance, named after physicist Michael Faraday, used to describe storage of charge in capacitors. The unit for the farad is coulombs per volt (C/V).
The farad (symbol: F) is the unit of electrical capacitance, the ability of a body to store an electrical charge, in the International System of Units (SI), equivalent to 1 coulomb per volt (C/V). It is named after the English physicist Michael Faraday (1791–1867). In SI base units 1 F = 1 kg −1 ⋅ m −2 ⋅ s 4 ⋅ A 2.
Farad is the unit of capacitance. A capacitor has a capacitance of 1 F when 1 coulomb (C) of electricity changes the potential between the plates by 1 volt (V). Another way of saying this is that, when the voltage across a 1 F capacitor changes at a rate of 1 V/s, the result is a current flow of 1 A.
The unit for the farad is coulombs per volt (C/V). This describes a case of two oppositely charge plates, each with a coulomb of charge, and a potential difference of one volt between them. A farad is a large capacitance for most capacitors.
One farad is an enormous amount of capacitance, and most devices have capacitances that are much smaller, typically measured in microfarads (µF) or picofarads (pF). For example, a typical capacitor used in electronic circuits may have a capacitance of 0.1 µF or 100 pF.