PARALLEL-PLATE CAPACITORS:

eo = Permittivity of empty space (e air ~ eo)
= 8.854x10-12 C 2/N.m2 = 1/(4p k)
e = Permittivity of material between plates
A = Surface Area of one of the plates (SI: m 2)
d = Separation of the plates (SI: m)


Electric Field in a Ideal Parallel Plate Capacitor:


Energy Density of the Electric Field in a Capacitor:


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