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Why does Europe have a voltage of 220 V, Japan has 100 V, and North America has 110 V? Is 220 V better, more dangerous, or more efficient? Why doesn't the world converge into a more unified voltage?
I was wondering why Europe has a voltage of 220 V, Japan has 100 V, and North America has 110 V. Why is this so?
The differences in voltage are due to historical and practical reasons. Europe adopted 220 V as their standard voltage in the early 20th century, while Japan and North America adopted their respective voltages later on.