Define e.m.f of a cell. How can you compare the e.m.f of the cells using potentiometer.

Explain how will you compare the e.m.f’s of two cells by a potentiometer.

Explain the principle of a potentiometer. How will you compare the e.m.f. of two primary cells by using potentiometer? Explain with proper circuit diagram.

Draw a circuit diagram for the comparison of e.m.f. of two primary cells using a potentiometer.

The e.m.f of the following galvanic cell:

Which one will you prefer to measure em.f of a cell, a potentiometer or a voltmeter?

Which one will you prefer to measure em.f of a cell, a potentiometer or a voltmeter?