Аннотация
Calculation of free electrons mobility at injection of electrons from high voltage needle electrodes on the surface of liquid using the methods of solid state physics is conducted. Applicability of the methods of solid state physics is substantiated. The dependence of mobility on electric field intensity ∼ Е-1/3 is achieved on account of the dependence of the wave function of electron on electric field intensity. It is substantiated that the energy distribution function of electron does not depend on electric field intensity.