The effect of displacement currents on time domain electromagnetic fields

Abstract

The usual practice of neglecting displacement currents in the calculation of electromagnetic transients is critically examined for the case of a uniform ground. For this case it is shown that the percentage error involved in the calculation by the neglect of the displacement currents is approximately (1500/4) arctan [Î1/(s1 t)], where t denotes time and s1 and Î1 denote the conductivity and permittivity of the ground respectively.