Answer :
Final answer:
A fully charged 12-volt automotive battery should typically have an open-circuit voltage of 12.6 volts. Therefore the correct option is C.
Explanation:
A fully charged 12-volt automotive battery should typically have an open-circuit voltage slightly above 12.0 volts to be considered in good health. Standard lead-acid automotive batteries, which consist of six 2-volt cells connected in series, would ideally have an open-circuit voltage of around 12.6 volts when fully charged. This voltage is a result of each cell having a nominal voltage of 2 volts under full charge conditions.
