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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

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

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Electrolysis and Storage Batteries
Cells are connected in parallel to

Increase the efficiency
Increase the voltage output
Increase the internal resistance
Increase the current capacity

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

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Electrolysis and Storage Batteries
Each cell has a vent cap

to check the level of electrolyte
to allow gases out when the cell is on charge
all of the listed here
to add water to the cell if needed

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Electrolysis and Storage Batteries
When two batteries are connected in parallel, it should be ensured that

they have identical internal resistance
they have same ampere-hour capacity
they have same e.m.f.
they have same make

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

10 V
1.5 V
15 V
2 V

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