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Potential Difference:Potentialis a function of the location, and potential difference between point A andpoint Bis calculated by subtracting the potential of A from potential of B. In anelectricfield, it is the amount work to be done to move a unit charge (+1 Coulomb) from B to A. Electric potential difference is measured in V (Volts). In an electrical circuit, current flows from the higher potential to lower potential.
EMF (Electromotive Force):EMF is the electrical potential difference provided by an energy source like battery. Varyingmagnetic fieldsalso can generate an EMF according to the Faraday’s law. Although EMF is also a voltage and measured in Volts (V), it is all about the generation ofa potential difference.Sothe important differencesbetween Voltage and EMF is:
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