Capacitance
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Capacitance is the ability of an object to store electric charge. It is measured by the change in charge in response to a difference in electric potential, expressed as the ratio of those quantities.
A capacitance bridge
Vacuum permittivity
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Vacuum permittivity, commonly denoted ε0, is the value of the absolute dielectric permittivity of classical vacuum. It may also be referred to as the permittivity of free space, the electric constant,
Capacitance
…r is the length from d S to a fixed point M on the conductor, ε 0 is the vacuum permittivity. Using this method, the self-capacitance of a conducting sphere of radius R in free space (i.e. far away from any other charge distributions) is: C…
ε0, the constant for vacuum permittivity