Abstract
This chapter discusses the calculation of specific inductance and capacitance for simple go-and-return circuits. The capacitance between two wires of an overhead transmission line would be calculated by idealizing the wires as straight parallel cylindrical conductors. The stipulation that the line is “remote from the earth” is to be interpreted as meaning that the spacing between conductors is small compared with their heights above earth and that the electric field in the vicinity of the conductors can be calculated from consideration of the charges on the conductors, without regard to any induced charges on the earth. Some transmission circuits include one wire only, the return path being through earth. For such circuits, the capacitance between a long wire and a parallel conducting plane, the plane being at earth potential should be known.
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