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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Petroleum jelly is applied to the electrical connections to the lead-acid battery

reduce path resistance
prevent local heating
prevent corrosion
prevent short-circuiting

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Electrolysis and Storage Batteries
The average charging voltage for alkali cell is about

1.7 V
1 V
2.1 V
1.2 V

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Electrolysis and Storage Batteries
Following will occur if level of electrolyte falls below plates

life of the cell is reduced
capacity of the cell is reduced
open plates are converted to lead sulphate
all of these

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Electrolysis and Storage Batteries
Internal resistance of a cell is reduced by

increasing the plate area
using vent plug to permit gas formed during discharge
putting plates very close together
all of the listed here

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Electrolysis and Storage Batteries
The active materials on the positive and negative plates of a fully charged lead-acid battery are

lead sulphate and lead
lead and lead peroxide
None of these
lead peroxide and lead

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Electrolysis and Storage Batteries
Five 2 V cells are connected in parallel. The output voltage is

1.5 V
15 V
2 V
10 V

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