electromotive force

noun

, Electricity.

1. the energy available for conversion from nonelectric to electric form, or vice versa, per unit of charge passing through the source of the energy; the potential difference between the terminals of a source of electrical energy: expressed in volts. : emf, EMF, E.M.F., e.m.f.

electromotive force

noun

1. physics
   1. a source of energy that can cause a current to flow in an electrical circuit or device
   2. the rate at which energy is drawn from this source when unit current flows through the circuit or device, measured in volts AbbreviationemfEMF E Compare potential difference

electromotive force

1. 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.

Word History and Origins

Origin of electromotive force¹

First recorded in 1825–35

Example Sentences

Rusty lead, so to speak, so connected with bright lead, has a high electromotive force.

From Project Gutenberg

Now whenever an electric conductor cuts magnetic lines of force an electromotive force is induced in the conductor.

From Project Gutenberg

If the coils are rotated in a magnetic field, each will produce an electromotive force.

From Project Gutenberg

Electromotive Force, the name given to the force tending to produce a flow of electricity in an electric circuit.

From Project Gutenberg

For a discussion of the electromotive force produced by thermo-electric action, see Thermo-electricity.

From Project Gutenberg