Exercise Two “Shorting a Battery” exposes the reader to the concept of voltage, current, and resistance. The end result is non-eventful as there are no visual effects of the short. However, the battery itself becomes very warm. This is a result of increased current and electrical flow through the wires and the electrolytic properties of the battery.
A second exercise involves placing a 3-amp-fuse in-between the battery terminals. The idea behind this experiment is to demonstrate the purpose of a fuse. When the current (amperage) increases past the tolerance of the fuse, it will blow the fuse filament creating an open circuit.
Of note, I was unable to successfully blow the fuse after several tries. Using my DMM I observed that the average voltage for several batteries were around 1.6v. However, after a few more tries and with a battery producing a voltage a little higher than 1.6v, the fuse finally blew.
Overall, experiment two was interesting enough to hold my attention. The books continues to drive home basic electronic fundamentals which is great for beginners. Also, there is a decent treatment of basic voltage and amperage information related to the experiments in addition to coverage on direct and alternating current.
1.5 volt AA Battery
Single Battery Carrier
3 amp fuse