Question

distinguish between primary cells and secondary cells.

Answer 1

Primary cell stop producing electricity when the chemical inside the cell are completely used up. The cells used in torches, clocks, toys etc are examples of primary cell. A dry cell made with zinc and carbon is a primary cell.

Secondary cells are also called rechargeable cells. As the name suggests, once the chemical inside the cells are used, they can be recharged using electricity and can be reused. Such cells are used in mobile phones, laptops, cameras etc.

Answer 2

Answer:

A primary cell cannot be recharged whereas a secondary cell can be recharged.

In a primary cell chemical reaction is irreversible whereas in a secondary cell chemical reaction is reversible.

The internal resistance is high for a primary cell whereas it is low for a secondary cell.