Enter a clue or pattern or both:
The Clue
Source of voltage: Abbr. (3 letter answer)
The Answer
EMF
Tags
Notes
The answer EMF is rarely seen, appearing only about once every 1300 puzzles.
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Definition
EMF as a noun:
1. (voltage, electromotive force, emf) = the rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts