Electrolysis and Storage Batteries
As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of

reducing time of charging
avoiding excessive gassing
increasing cell capacity
Both of the listed here

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Electrolysis and Storage Batteries
For a cell to work, which of the following condition(s) become necessary ?

All of the listed here
Electrolyte liquid or paste should be conducting
Electrolyte must chemically react with one of the electrodes
Two electrodes of different meta’s should be inserted in the electrolyte, not touching each other

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