electromagnetismmathbfB

Electromagnetism is a fundamental force of nature that describes the interaction between electrically charged particles. It encompasses both electricity and magnetism, revealing that these two phenomena are deeply interconnected and are two aspects of the same underlying force. Electric fields are produced by electric charges, and these fields exert forces on other charges. Magnetic fields, on the other hand, are produced by moving electric charges (electric currents) or by intrinsic magnetic moments of elementary particles. These magnetic fields also exert forces on moving charges.

A key principle of electromagnetism is that a changing magnetic field can induce an electric current in a nearby conductor, a phenomenon known as electromagnetic induction. Conversely, an electric current flowing through a wire creates a magnetic field around that wire. This relationship is described by Maxwell's equations, a set of four fundamental equations that unify electricity, magnetism, and light. These equations predict the existence of electromagnetic waves, which travel at the speed of light and include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Electromagnetism is responsible for a vast array of everyday phenomena, from the operation of electric motors and generators to the propagation of light and radio signals. It is a cornerstone of modern physics and technology.