Two long, cylindrical conductors of radii a₁ and a₂ are parallel and separated by a distance d, which is large compared with either radius. Show that the capacitance per unit length is given approximately by

Where a is the geometrical mean of the two radii.

Approximately what gauge wire (state diameter in millimeters) would be necessary to make a two-wire transmission line with a capacitance of 1.2 ? 10^?11 F/m if the separation of the wires was 0.5 cm? 1.5 cm ? 5.0 cm ?

Transcribed Image Text:

-1 d' Ce πεο1 In α