Why negative plates are one more than positive plates?

Why negative plates are one more than positive plates?
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Answer :

Negative plates are one more than positive plates so as to get negative plates on both the sides of positive plates. This is to prevent the buckling action of the lead on positive plate in the multi plate lead acid cell. The other reason is that both the sides of positive plates will become active and the efficiency of the positive plate and the cell will increase.
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Related questions

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