Show that in a closed circuit the potential difference between the two ends of a cell is less than the emf of that cell.

The potential difference between the terminals of a cell in an open circuit is called "_____" .

A circuit consists of two cells, each of e.m.f. E and internal resistances r_(1) and r_(2) are connected in series through an external resistance X. If the potential difference between the ends of the first cell is zero, the value of X in terms of r_(1) and r_(2) will be

A circuit consists of two cells, each of e.m.f. E and internal resistances r_(1) and r_(2) are connected in series through an external resistance X. If the potential difference between the ends of the first cell is zero, the value of X in terms of r_(1) and r_(2) will be

What is the difference between emf of a cell and potential difference of a cell?

What is the relationship between potential difference across the terminals of a cell and emf of the cell ?