Question

Distinguish between terminal potential difference and emf of a cell. 

Answer 1

Terminal potential difference	emf
1. It is the potential difference between the electrodes of a cell in a closed circuit (when current is drawn from the cell). Represented by V.	1. It is the potential difference between the electrodes of a cell when no current is drawn from the cell. Represented by E.
2. Its SI unit is volt.	2. Its SI unit is volt.