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Substantiivi

1. Any of several quantities related to electricity.
2. (physics) The static electric energy of a charged body.
3. (physics) The quantity of unbalanced positive or negative ions in or on an object; measured in coulombs.
4. (physics) A quantum number of some subatomic particles which determines their electromagnetic interactions; by convention the electron has an electric charge of −1, the proton +1 and quarks have fractional charge.