alleryStart learning →A lead acid car battery is built from cells that each produce 2 V. How many cells give the usual 12 V?
ASix cells
BFour cells
CEight cells
DTwelve cells
Answer & Solution
Correct answer: A. Six cells
1. Cells wired in series add their voltages together.
2. Each lead acid cell supplies 2 volts.
3. Reaching 12 volts needs 12 divided by 2, which is 6 cells.
4. Twelve cells would give 24 volts, double what a car battery supplies.
_Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 17.5 Batteries and Fuel Cells_
Keep practising Electrochemical Series
Browse all Electrochemical Series questions for NY Regents Chemistry, or explore more Chemistry topics.
Related questions
A current of 10.23 A flows through a silver plating cell for exactly one hour. How many moWater is electrolyzed and both gases are collected. How do the two volumes compare?A galvanized iron sheet is scratched right down to the bare iron. What still protects the What separates a primary battery from a secondary battery?A cell pairs a gold half-cell at plus 1.498 V with a nickel half-cell at minus 0.257 V. WhA half-reaction is multiplied by three so the electrons balance. What happens to its standA cell has a silver cathode at 0.80 V and a copper anode at 0.34 V. What is the standard cWhy is platinum a common choice for an electrode that takes no part in the reaction?