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Definition of "Electromotive Force" |
[EMF] The force (voltage) that produces an electric current in a circuit. / The source of electrical energy required to produce an electric current in a circuit. Defined as the rate at which electrical energy is drawn from the source and dissipated in a circuit when unit current is flowing in the circuit. / Electromotive force, also called emf, is the voltage developed by any source of electrical energy such as a battery or dynamo. The word "force" in this case is not used to mean mechanical force, measured in newtons, but a potential, or energy per unit of charge, measured in volts. / The potential difference between the two electrodes in a cell. The cell emf is the cell voltage measured when no current is flowing through the cell. It can be measured by means of a pH meter with high input impedance. / The term broadband refers to the wide bandwidth characteristics of a transmission medium and its ability to transport multiple signals and traffic types simultaneously. The medium can be coax, optical fiber, twisted pair, DSL local telephone networks or wireless. In contrast, baseband describes a communication system in which information is transported across a single channel. / (emf) force that causes the motion of electrons due to potential difference between two points. (Voltage) |
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