about EMF: Electromotive force
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Electromotive force, also called emf is the voltage developed by any source of electrical energy such as a battery or dynamo. It is generally defined as the electrical potential for a source in a circuit. A device that supplies electrical energy is called electromotive force or emf. Emfs convert chemical, mechanical, and other forms of energy into electrical energy. The product of such a device is also known as emf.
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It is the amount of energy supplied by the source to each coulomb of charge.
It is measured in volts .
It is represented by the symbol ε (epsilon).
Explanation:
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