Electrostatics

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Capacitance

 , where:

C = Capacitance (Fa)

Q = Charge at each plate (Coulomb)

V = Voltage between plates (V)

 = Dielectric Constant of Material Between Plates

 = Electric Constant (F/m)

Charge Density

 , where:

 = Charge Density (C/m3)

Q = Sum of Charges within Volume (C)

V = Volume (m3)

Continuity Equation (Electromagnetism)

  , where:

 = Divergence

J = Current Density (A/m2)

 = Charge Density (C/m3)

Coulomb Constant

The value of the Coulomb Constant (K), an important value in physics, given in SI cgs units of (N*m2)/Cis:

 , where:

k = Coulomb Constant ((N*m2)/C2)

 = Electric Constant (Fa/m)

Coulomb Potential

The voltage generated by a point charge:

 , where:

V = Voltage (V)

 = Pi

 = Electric Constant (Fa/m)

q = Electric Charge of Body (C)

r = Distance from Body (m)

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