Define lost volt,State the factors on which the internal resistance of a cell depends.

Explanation

IF E is the emf of a given cell and V is the potential difference across a given circuit then, `V=E-Ir`, i.e., the whole emf of the cell is not obtained as potential difference in the external circuit.A potential of magnitude Ir is lost inside the cell for a internal resistance of r. This is called the lost volt of the cell.The internal resistance of a cell is depends on the size of two electrodes,distance between two electrodes and the nature of the electrolyte.