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+--- Thread: Gave my son a 9 volt battery today... (/showthread.php?tid=93154)
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Re: Gave my son a 9 volt battery today... - Mike Johnson - 02-21-2010
You might be interested in the book "Fifty Dangerous Things (You Should let Your Children Do)" by Gever Tulley.
http://www.amazon.com/Fifty-Dangerous-Things-Should-Children/dp/0984296107/
Re: Gave my son a 9 volt battery today... - mikebw - 02-22-2010
If you've never opened up the casing on a 9V battery you should try it. Inside are 6 little 1.5v batteries, similar to a AAA but smaller I think. This is a great demonstration of how voltage sources are additive when placed in series. 9V batteries are also cool because you can plug the + of one battery into the - of the other without any extra wire or fasterners. Given enough batteries you can add up to quite a voltage!
Re: Gave my son a 9 volt battery today... - BernDog - 02-22-2010
mikebw wrote:
Inside are 6 little 1.5v batteries, similar to a AAA but smaller I think.
I think they're actually considered AAAA.