Electrical engineering is an engineering field that deals with the study and application of electricity, electronics, and electromagnetism. This field deals with the technology of electricity. Electrical engineers work on a wide range of components, devices and systems, from tiny microchips to huge power station generators. Electrical engineers must be good in maths and science, they should have the ability to analyze systems to understand how they work and knowledge of electrical systems and circuitry. Electrical engineering is subdivided into a wide range of subfields like electronics, digital computers, power engineering, telecommunications, control systems, radio-frequency engineering, signal processing, instrumentation, and microelectronics.