Question

What are primary and secondary batteries?

Answer 1

Difference between Primary cell and Secondary cell:-

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

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

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

4)In a primary cell, chemical energy is converted into electrical energy when current is drawn from it whereas in a secondary cell electrical energy is converted into chemical energy when current is passed through it and chemical energy is converted into electrical energy when current is drawn from it.

5)A primary cell is light and less expensive whereas  a secondary cell is heavy and expensive.