Recently Added Physical Formulas

· Electrical Capacitance in an Electronic Circuit
· Electrical Capacitance
· Conductor in Static Electric Field
· Electrical Conductance and Electrical Resistance
· Current Density

Additional Formulas

· Coulomb's Law
· Gauss' Law
· Application of Gauss’s Theorem
· Joule's Law
· Kirchhoff's Current Law
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· Wave
· Refraction and Reflection
· Electromotive Force
· Electrostatic Force

Current Location > Physics Formulas > Electromagnetism > Electrical Capacitance

Electrical Capacitance

Electrical Capacitance is given by:

Corresponding units:
farad(F) = coulomb(C) · volt(V)

If V12 is the voltage between two conductors 1 and 2, the capacitance will be:
C = Q / V12

For a parallel plate capacitor the capacitance is given by:

S: the area of the plates
d: the distance between the plates
V12: the voltage, which can be determined by

For a cylindrical capacitor the capacitance is given by:

L: the length of the cylinder
b: the outer radius
a: the inner radius
ε: the permittivity of the dielectric material in between
Vab: the voltage, which can be determined by:

For a spherical capacitor the capacitance is given by:

Ri, R0: inner and outer radius
ε: the permittivity of the dielectric material in between.
Vio: the voltage, which can be determined by: