I understand if we touch the wire and were are on the ground it creates a complete circuit. So we get electrocuted.
But how does the ground or earth wire works, so that we don’t get electrocuted?
In: Engineering
To add on to all the other answers (which are correct, but they say more or less the same thing, I don’t understand why everyone needs to repeat exactly what other people have already written), notice that you (generally) find a ground connection only on appliances that are enclosed in a metal housing, or have some metal parts that you can touch that could possibly get shorted to mains. You’re probably never going to find a phone charger with a ground connection, because it is all plastic, and the USB terminals are galvanically isolated from mains by the transformer. Maybe this will help make sense.
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