Given two finite parallel planes of length l, width w, area A = lw, and separation d, one with total surface charge 
and the other with 
, the electric field can be found in cgs (ignoring edge effects) from
so
The capacitance (ignoring edge effects) then follows from the equation for voltage
as
If a current I were allowed to flow, the magnetic field is easily found as
where c is the speed of light, so
The inductance would then follow from
as
In MKS, the corresponding quantities as
where
is the permittivity of free space and 
is the permeability of free space.
and the other with , the electric field can be found in cgs (ignoring edge effects) from (1)
so
(2)
The capacitance (ignoring edge effects) then follows from the equation for voltage
(3)
as
(4)
If a current I were allowed to flow, the magnetic field is easily found as
(5)
where c is the speed of light, so
(6)
The inductance would then follow from
(7)
as
(8)
In MKS, the corresponding quantities as
(9)
(10)
(11)
(12)
(13)
(14)
where
is the permittivity of free space and is the permeability of free space.
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