Differentiate between primary cell and secondary cell.

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Solution

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.

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	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.