The program is designed for students, Bachelor's Degree in Electrical Engineering , Electrical Engineering and Technology , Engineering specialty "Electrotechnological installations and systems" , Master's Degree in Plasma , laser and beam installations with power and control systems" . Plasma is the fourth state of matter - ionized electrically conductive gas. Plasma is able to store a lot of energy, which determines its use in various technologies (processing of powders, welding, cutting, decomposition of waste, etc.) ). It is generated in special devices - plasmotrons. In them, an electric current is passed through the plasma. At the same time, the energy required to maintain it in the plasma state is released in the gaseous medium.. The interaction of the plasma with the external or its own electromagnetic field determines such important characteristics of the plasma as its temperature and speed. The manual is devoted to the solution of electromagnetic problems in relation to high-frequency induction plasmotrons . Various models of such plasmotrons. are considered. Analytical solution for the simplest one-dimensional cases. The solution of the electromagnetic problem is described using a physically clear and widespread numerical method - the control volume method. The results of the solution of two-dimensional electromagnetic problem. are presented