The paper deals with theRC-analogue representation of electromagnetic fields involving unidirectional current flow, such as those associated with current-carrying conductors lying in armature slots. The resulting magnetic field is in general 2-dimensional and is fully represented in the analogue. Capacitor current in the latter is directly equivalent to current flow in the corresponding section of the conductor, and the eddy-current loss in a conductor may be calculated from the distribution of current between the several capacitors. Some simple examples illustrate the translation of field boundary conditions into analogue terms.