Electromagnetism or Electromagnetic force is a type of physical interaction that occurs between electrically charged particles. The electromagnetic force is the second strongest force in nature, second only to strong nuclear force. The Electromagnetic phenomenon is usually defined in terms of the electromagnetic force which includes both electricity and magnetism as different manifestations of the same phenomenon.

The electromagnetic force is responsible for practically all phenomena one encounters in daily life above the nuclear scale, with the exception of gravity. Atoms are held together by the electromagnetic attraction between the protons in the nucleus and the electrons orbiting it. Light is an electromagnetic wave, where an oscillating electric field generates a changing magnetic field, which in turn creates an electric field, and so on. Electromagnetic forces also explain how these particles carry momentum by their movement.

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