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Alfred's Serif Users' Forums → Mathematics & Science → Physics and History of Why USA uses 120 volts and others 220 volts
Physics and History of Why USA uses 120 volts and not 220 volts
An interesting historical, simple, clear and concise explanation of how different countries evolved their mains voltages.
Youtube video:
https://www.youtube.com/watch?v=7yRGvMgieEU
Alfred's Serif Users' Forums → Mathematics & Science → Physics and History of Why USA uses 120 volts and others 220 volts
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