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What is electromotive force? What is theunit of E.M.F in S.I.?

Answer»

Electromotive force, abbreviated emf, is the electrical intensity or "pressure" developed by a source of electrical energy such as a battery or generator. A device that converts other forms of energy into electrical energy provides an emf as its output.

It is abbreviated E in the international metric system but also, popularly, as emf. ... Despite its name, electromotive force is not actually a force. It is commonly measured in units of volts, equivalent in the metre–kilogram–second system to one joule per coulomb of electric charge.

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