Electromotive force (EMF)
The pressure or force that causes electrons to flow in an electrical circuit.
Also defined in 2 more sources
The force that causes electrons to move from one atom to another within an electrical circuit. Electromotive force is an electrical pressure, and it is measured in volts.
Aviation Maintenance Technician Handbook — Airframe, p. G-14
A force that causes electrons to move from one atom to another within an electrical circuit. An electromotive force, or EMF, is the difference in the electrical pressure, or potential, that exists between two points. An EMF may be produced by converting mechanical movement, pressure, chemical, light, or heat energy into electrical energy. The basic unit of EMF is the volt.
Aviation Maintenance Technician Handbook — Powerplant, p. G-11