How does AC electricity transfer energy if the electrons just go back and forth, and don’t actually go anywhere?
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Electrons aren’t energy, they don’t get gobbled up to power electric devices. Instead the power is conveyed through the movement of electrons and their associated electromagnetic fields.
Think about trying to spin a wheel in a machine. You might attach a belt to it and spin it that way, but the wheel isn’t *consuming* the belt to spin. You could also attach a rod offset from the center of the wheel and by alternating pushing and pulling the rod rotate the wheel. The latter is sort of like how alternating current works, the force is being transferred in the cycle of the current.
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