This article presents the finite element method (FEM) application to quantify the electromagnetic field radiating around an electrical transmission line. For this purpose, the development of second-degree differential equations describing the physical behavior of electromagnetic fields was performed in two dimensions, considering that the conductors of the transmission line are infinitely long and straight. As an application simulation, results are presented to different line configurations under normal operating conditions. From the results, it can be concluded that, for standard line configurations, the associated electromagnetic effect does not seem relevant; however, the use of power lines within urban areas motivates the need to quantify these effects under compliance low-frequency electromagnetic field emission standards.