It's that time again......... "scientific" at home tests you can do with household items, as always use common sense, electricity is dangerous and sometimes deadly. I will not take any responsibility for anything that may happen.
Electricity is most often generated at a power station by electromechanical generators, primarily driven by heat engines fueled by chemical combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind.
But that's not what we are looking for, we're looking for the experiments you can do which such ordinary items that you can't believe it's true!
A famous one, the potato battery:
You'll need: a) two different metal strips and one potato. copper, aluminum, zinc (galvanized steel)
b) stick the metal wires into the potato.
And that already functions as a battery? Yes it does, because of a chemical reaction provided by an acid contained in the potato with the 2 different metals, a current will flow between the 2 wires.
Of course you can also try out your experiment with making a circuit with potato batteries in series of parallel circuits. Test with a sensitive volt meter, or LED etc. And see what you can come up with.
A nice video of this can be found on youtube, POTATO BATTERY EXPERIMENT .
or SALT AND VINEGAR.
Be careful! and have fun.
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