306 DIY Science: Illustrated Guide to Home Chemistry Experiments
RQEWEvI UESTIOnS
q 1 : From your measurements of voltage, resistance, and current in the cell, series batteries, and parallel batteries, what general
conclusions can you draw?
q: 2 Which metal is the anode and which is the cathode in these batteries? In which direction do electrons flow?
q: 3 A standard 12V lead-acid automobile battery when fully charged has a terminal voltage of 12.6V to 12.8V. How many
magnesium/copper cells would be required to reach at least this voltage?
q: 4 If starting a particular automobile requires 600 amps (600,000 mA), how many of your magnesium/copper/lemon cells would
be needed to construct a battery capable of starting that automobile? Would the internal resistance of the lemon battery be an issue?
TABLE 16-7: Build a battery—observed data.
Configuration voltageResistanceCurrentA. Cell ___.____V____.___ Ω ____.___ mAB. Series battery (2-cell)___.____V____.___ Ω ____.___ mAC. Series battery (3-cell)___.____V____.___ Ω ____.___ mAD. Parallel battery (2-cell)___.____V____.___ Ω ____.___ mAE. Parallel battery (3-cell)___.____V____.___ Ω ____.___ mA