Distinguish between emf and potential difference.

Explanation

Difference between emf and potential difference are follows :
`{:("S.No.","emf","Potential difference"),((i),"It is the difference in electrode potentials,","It is the difference of electrode potentials"),(,"when no current is flowing through circuit.","in a closed circuit."),((ii),"It is maximum voltage obtained from a cell.","It is less than maximum voltage"),(,,"obtained from a cell."),((iii),"It is responsible for steady flow of current.","It is not responsible for steady flow of current."),((iv),"It is measured with a potentiometer.","It is measured with a voltmeter."):}`