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electromotive force
Sign in to saveAlso known as source tension, emf, source voltage
scalar physical quantity homogeneous to a voltage, expressing the modulus of the force exerted on a charge in an electric field
Electromotive force (EMF) is a physical quantity that measures the strength of the force pushing electric charges through a circuit, expressed in units of voltage. It matters because it determines how much energy is available to move electrical charge and power devices like batteries and generators.
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- Electromotive Force for an ideal voltage source.jpg
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- Electromotive force
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Encyclopedic overview
In electromagnetism and electronics, electromotive force (emf, or EMF) or electromotance, denoted
E
Excerpted from Wikipedia’s “electromotive force” article, available under the CC BY-SA 4.0 licence.
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