▎ 摘　　要

Graphene has reveled extremely high electron mobility and phonon thermal conductivity Here we investigated numerically the electric current propagation and Ohmic heating effects in the rectangular single-layer graphene ribbons. The solutions for the current and heat conduction equations were found using the finite element method. The temperatures and resistances of graphene ribbons were studied as functions of graphene's thermal conductivity, electric current density and geometry of the ribbons The obtained results are important for assessing the feasibility of graphene applications in the electrical and thermal interconnect networks in nanoscale integrated circuits and three-dimensional chips