Man there’s some weird answers here. The neutral wire is named neutral because it’s kept at the same potential as the ground. Meaning if you touch it, you won’t get electrocuted normally. But you still need 2 wires to complete the circuit wether you are using AC or DC. You need a loop. Without a neutral wire you wouldn’t have a complete circuit . But it doesn’t have to be neutral to do that. In fact in direct current circuits there is no neutral
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