Electromagnetic force

electromagnetic force
The fundamental force associated with electric and magnetic fields. The electromagnetic force is carried by the photon and is responsible for atomic structure, chemical reactions, the attractive and repulsive forces associated with electrical charge and magnetism, and all other electromagnetic phenomena. Like gravity, the electromagnetic force has an infinite range and obeys the inverse-square law. The electromagnetic force is weaker than the strong nuclear force but stronger than the weak force and gravity. Some scientists believe that the electromagnetic force and the weak nuclear force are both aspects of a single force called the electroweak force.


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  • Electromagnetic-induction

    noun, Electricity. 1. the induction of an electromotive force by the motion of a conductor across a magnetic field or by a change in magnetic flux in a magnetic field. Production of an electric current by changing the magnetic field enclosed by an electrical circuit. The most common use of electromagnetic induction is in the […]

  • Electromagnetic interaction

    noun 1. (physics) an interaction between charged particles arising from their electric and magnetic fields; its strength is about 100 times weaker than the strong interaction See interaction (sense 2), electroweak interaction

  • Electromagnetic moment

    noun 1. a measure of the magnetic strength of a magnet or current-carrying coil, expressed as the torque produced when the magnet or coil is set with its axis perpendicular to unit magnetic flux density. It is measured in ampere metres squared m Also called magnetic moment Compare magnetic dipole moment

  • Electromagnetic-pump

    noun 1. a device that causes an electrically conducting fluid to flow by means of electromagnetic induction. noun 1. a device for pumping liquid metals by placing a pipe between the poles of an electromagnet and passing a current through the liquid metal

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