Question

Distinguish between emf and terminal voltage of a cell.

Answer 1

Emf	Terminal voltage
It is the maximum potential difference that can be delivered by a cell when no current flows through the circuit.	It is the potential difference across the terminals of the load when the circuit is switched on and a current flows through it.
It is represented by E and remains constant for a cell.	It is represented by V and depends on the internal resistance of the cell.