On what factors does the internal resistance of a cell depend? - Vidyadip

Question

On what factors does the internal resistance of a cell depend?

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Answer

The internal resistance of a cell depends on :

Nature of the electrolyte :
The greater the conductivity of the electrolyte, the lower is the internal resistance of the cell.
Separation between the electrodes :
The larger the seperation between the electrodes of the cell, the higher is the internal resistance of the cell. This is because the ions have to cover a greater distance before reaching an electrode.
Nature of the electrodes.
The internal resistance is inversly proportional to the common area of the electrodes dipping in the electrolyte.

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