Ancient Egyptian texts dating from 2750 BCE referred to these fish as the "Thunderer of the Nile", and described them as the "protectors" of all other fish. Long before any knowledge of electricity existed, people were aware of shocks from electric fish. History Thales, the earliest known researcher into electricity Electricity is integral to applications spanning transport, heating, lighting, communications, and computation, making it the foundation of modern industrial society. This rapid expansion in electrical technology at the time was the driving force for the Second Industrial Revolution, with electricity's versatility driving transformations in industry and society. The development of the theory of electromagnetism in the 19th century marked significant progress, leading to electricity's industrial and residential application by electrical engineers by the century's end. The study of electrical phenomena dates back to antiquity, with theoretical understanding progressing slowly until the 17th and 18th centuries. Electric potential is the work done to move an electric charge from one point to another within an electric field, typically measured in volts.Įlectricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing with electrical circuits involving active components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies. In most applications, Coulomb's law determines the force acting on an electric charge. The motion of electric charges is an electric current and produces a magnetic field. The presence of either a positive or negative electric charge produces an electric field. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge.
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