Electrical engineering deals with various electric-related issues like electric power engineering, electronics, power electronics and involves designing, developing, testing and supervising the production of electrical and electronic equipment and machinery. An electrical engineer is also responsible for solving various issues of electronic systems which can be large scale (electric-power engineering) or small scale (nanoelectronics).

Sub-disciplines of electrical engineering include: microelectronics, telecommunication engineering, signal processing, control engineering, computer engineering, integrated circuits, digital electronics, power engineering, optoelectronics.