Differentiate between primary cell and secondary cell.
Primary cell | Secondary cell | |
1. | Primary cells are irreversible. | Secondary cells are reversible and can be easily charged by electric supply. |
2. | Their internal resistance is very high. | They posses low internal resistance. |
3. | They are cheaper. | They are comparably expensive. |
4. | They can be easily used. | In comparison to primary cell they are difficult to handle. |
5. | They have short life time. | They are durable. |
6. | They are smaller in size. | They are larger. |
7. | They are used in small device like remotes and other portable devices. | In large device like invertor, secondary cells are used. |
8. | They are made up of dry cell. | They are made of wet cells and molten salts. |