If the e.m.f. of a driving cell be decreased. What will be effect on the positions of zero deflection in a potentionmeter? Explain.

If the e.m.f of a galvanic cell is neagative, it implies that:

Why does the e.m.f. of a galvanic cell decrease on drawing current from it? When does it fall to zero

A cell of e.m.f. 4 V and of negligible internal resistance is connected in series with a potentiometer wire of length 400 cm. The e.m.f. of a Leelanche cell is found to be balacned at 150 cm from the positive end of the potentiometer wire. What is the e.m.f. of the Leclanche cell ?

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

What factors govern the direction of e.m.f. ?

Is it true that P.E. at mean position is zero?

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

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