The life of a cell or a battery depends on the electrodes used in them.
In the process of purification of copper metal, a thin plate of pure copper and a thick rod of impure copper are used as electrodes, and a metal salt solution is used as an electrolyte : (a) Which electrode is connected to the positive terminal of the battery ? (b) Which electrode is connected to the negative terminal of the battery ? (c) Which metal salt solution is taken as electrolyte ?
Name the factor on which the internal resistance of a cell or battery depends.