" iii) Why is a potentiometer preferred over a voltmeter to measure emf of a cell? "

State the uses of a potentiometer. Why is a potentiometer preferred over a voltmeter for measuring emf?

Why is potentiometer preferred to voltmeter for the measurement of emf of a cell? Explain.

Why is a potentiometer preferred over a voltmeter for determining the e.m.f. of a cell?

Why is potentiometer preferred over a voltmeter for measuring emf? or explain. Potentiometer acts as an ideal voltmeter .

Explain the principle on which the working of a potentiometer is based. Why is the use of potentiometer preferred over that of a voltmeter for measuring the e.m.f. of a cell.