Question

The internal resistance of dry cells is ________than the common electrolytic cells?

Answer 1

The internal resistance of cells:

1. Internal resistance is the opposition to the flow currently offered by the cells and batteries, resulting in heat generation.
2. It is the resistance provided by the electrolyte and electrodes in a cell, and thus, it causes a voltage drop when current flows through it.
3. When electricity flows around a circuit, the internal resistance of the cell itself resists the flow of current in the cell itself.
4. The electrodes and electrolytes offer internal resistance, which opposes the current flow inside the cell.
5. A battery's internal resistance mostly depends on its size, state of charge, chemical properties, age, temperature, and discharge current.

Comparison of the internal resistance of dry cells and common electrolytic cells:

1. The internal resistance of dry cells is generally higher than the common electrolytic cells.
2. Dry cells usually have high internal resistance as the primary dry cells are not rechargeable and are generally disposed of after their chemicals have been used up through the cell’s internal reaction.
3. Thus, in the case of dry cells, high internal resistance is required to complete the internal reactions.
4. Primary cells, like alkaline batteries, don't normally have fluid inside them, which is why they are often referred to as "dry cells", increasing their internal resistance.
5. Whereas in the case of common electrolytic cells, the cells are rechargeable, where the used chemicals get used through multiple chemical reactions, and thus high internal resistance is not required to complete the internal reactions.

Hence, the internal resistance of dry cells is higher than the common electrolytic cells.