eli5: why do some plugs only have 2 flat prongs and others have a third cylindrical one?
In: 3
3 prongs = increased safety. 3rd prong is especially used for stuff that uses lots of electricity, because increased danger to user
Electricity flows in a circuit into the right prong (hot) and out of the left prong (neutral). The 3rd prong is called the ground and it’s identical to the left/neutral. It’s a backup to keep you getting shocked if something happens to the neutral plug – it’s a 2nd option for the electricity to flow out instead of into you
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