The Capacitor Field Modelling by Comsol

in the paper, the analysis of the capacitor electromagnetic field by means of program Comsol and comparison of obtained results with those ones obtained by the theoretical calculation based on the corresponding analytic expressions is presented. Study was done for two types of capacitor field: stationary one and frequency dependent one. For stationary fields, capacitor capacitance and total capacitor field energy are expressed and compared, for a frequency dependent field they are capacitor admittance and total capacitor field energy.