An electric field is a physical field produced by electrically charged objects, influencing the force and motion of other charged objects. An Electric field can be considered an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge. Electric fields are usually caused by varying magnetic fields or electric charges. Electric Field Formula Mathematically electric field (E) is described at a given point is defined as the force (F) experienced by a test charge (q) placed at that point, divided by the magnitude of the test charge: This equation gives the magnitude of the electric field created by a point charge Q. The distance r in the denominator is the distance from the point charge, Q, or from the center of a spherical charge, to the point of interest. If the test charge is removed from the electric field , the electric field still exists. To create a three-dimensional map of the electric field , imagine placing the test charge in various locations in the field . At each location, measure the force on the charge, and ...
