Low Frequency High Frequency
Voltage \(V\) (V) Current \(I\) (A) Capacitance \(C\) (μF/km)
Electric Field:

\[E = {q \over 2\pi \times \epsilon_0 \times d}\]

Air Permittivity :

\(\epsilon_0 = 8.55\times 10^{-12} \ F/m\)

Charge (q):

\(C\times V=\)

Magnetic Field:

\[B = {μ_0 \times I \over 2\pi \times d}\]

Air Permeability :

\(μ_0 = 4\pi \times 10^{-7} \ Tm/A\)