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electromotive force

   Also found in: Medical, Legal, Financial, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.56 sec.
electromotive force
n. Abbr. EMF
The energy per unit charge that is converted reversibly from chemical, mechanical, or other forms of energy into electrical energy in a battery or dynamo.
electromotive force
Noun
Physics
1. a source of energy that can cause current to flow in an electrical circuit
2. the rate at which energy is drawn from such a source when a unit of current flows through the circuit, measured in volts
electromotive force
Electric potential or voltage. Electromotive force is not really a force, but a measure of how much work would be done by moving an electric charge.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.electromotive forceelectromotive force - the rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts
emf, voltage
electrical phenomenon - a physical phenomenon involving electricity
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Inductance: The electromotive force induced by changes in the electrical current running through a metal.
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And in order to realize how important the introduction of the potential has been in electric measurements, one needs only to remember how most minds in this area had only a nebulous understanding of electromotive force, voltage and electroscopic difference, and how finally by Thomson's potentiometers the most delicate investigations became possible.
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Alternative methods include the use of electromotive force (iontophoresis or ionization), mechanical force (phonophoresis or sonophoresis), or passive permeation.
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