I understand basic electricity in that electrons are flowing to energize whatever is on the line, say a light bulb, but in order for it to work you need to complete the circuit, why? What is traveling from the light bulb back to the source over the neutral wire?
In: Engineering
Think of electricity as the wind moving through a field of wind turbines. It only performs work as it passes through. In order to keep moving through the field, it needs some place to go. It can’t just stop and stay in the field. When it stops moving, it stops being wind.
Electrons = Air, Electricity = Wind
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