Question

Distinguish between primary and secondary cell, give two differences?

Answer 1

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