In atomic physics and chemistry, for instance, the interaction in the electric field between the atomic nucleus and electrons is the force that holds these particles together in atoms. Electric fields and magnetic fields are both manifestations of the electromagnetic field, one of the four fundamental forces of nature.Įlectric fields are important in many areas of physics, and are exploited in electrical technology. Electric fields originate from electric charges and time-varying electric currents. Similarly, the electric field is stronger nearer charged objects and weaker further away. Thus, we may informally say that the greater the charge of an object, the stronger its electric field. These forces are described by Coulomb's Law, which says that the greater the magnitude of the charges, the greater the force, and the greater the distance between them, the weaker the force. The electric field of a single charge (or group of charges) describes their capacity to exert such forces on another charged object. Because these forces are exerted mutually, 2 charges must be present for the forces to take place. Charged particles exert attractive forces on each other when their charges are opposite, and repulsion forces on each other when their charges are the same. An electric field (sometimes E-field ) is the physical field that surrounds electrically charged particles.
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