I learnt in one of my classes that “current flows in the path of least resistance” but how does the current know which path is least resistant?
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Electrons like to spread out through metal the same way water likes to spread out in puddles. If you connect two things together with a wire, electrons can flow between them. If you connect two ends of two things, like a battery and a lightbulb, electrons can go in a loop, pushed by the battery.
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