[ELI5] How did we decide on 120V and 220V for house electricity? what about 50hz and 60hz? whats so special about those numbers?
In: Technology
Regarding the 50hz and 60hz, not likely a particular reason for using either one they were just adopted as standards when it all started and has stayed that way.
What they mean is how many times per second the fluctuation from zero volts to 170 volts positive then back to zero, then to negative 170 volts then back to zero. That is considered one cycle which happens 50 or 60 times per second.
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