Interpretation:
The reason due to which lead acid batteries are called storage batteries is to be written.
Concept introduction:
A combination of cells is called a battery. The batteries which can be recharged by connecting a charge source are called rechargeable batteries.
Answer to Problem 73A
Lead acid batteries and other rechargeable batteries are sometimes called storage batteries because they store charge. They cannot create potential difference on their own and only store charge.
Explanation of Solution
To be able to get recharged, lead acid batteries cannot produce potential difference like the wet or dry cells. They can only store charge and hence are called storage batteries.
Rechargeable batteries are called storage batteries for their ability to store charge.
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