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What is emf and potential difference

the amount of work done when a unit charge flows from one point to another point in an electric current is known as potential difference its SI UNIT is volt
emf stands for electromotive  force  it is the maximum potential difference which can exist between two terminals of the cell when no current is drawn from the cell
the SI UNIT is volt
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Emf and potential difference is.comone and the same thing. Potential difference is the amount of work done per unit charge. Its SI unit is Volt and CGS Unit is statvolt.
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Potential difference between two conductor is equal to the work done in transferring a unit positive charge from one conductor to the other.Potential difference is equal to emf.
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