Electrical engineering is an engineering discipline concerned with the study, design and application of equipment, devices, and systems which use electricity, electronics and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use.

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Electrical engineering is now divided into a wide range of different fields, including computer engineering, system engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, photovoltaic cells, electronics, and including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics/control,