|Casia used a copper penny as the cathode and a|
galvanized nail as the anode.
|The big expense in this lab was the voltmeter |
which I bought at Home Depot for about $40.
|Casia playing around with the voltmeter.|
|Casia testing the voltage of the batteries in series.|
|Casia explaining to Garrett the difference between|
batteries in series and in parallel.