. Explain the meaning of the terms e.m.f., terminal voltage and internal resistance of cell

Best Answer

e.m.f: When the cell is in open circuit, the potential difference between the terminals of the cell is called its electro-motive force or e.m.f

Terminal voltage: When the cell is in closed circuit, the potential difference between the electrodes of the cell is known as terminal voltage.

Internal resistance: The resistance offered by the electrolyte inside the cell, to the flow of current, is known as the internal resistance of the cell.