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What happens to the electrons, do they go back into the battery?
Quote from: colarris on 14/10/2013 23:46:51What happens to the electrons, do they go back into the battery?Yes, but not the same ones in the first instance. Imagine the circuit as jammed full of free electrons. You stuff some in at one end, they all move along a bit, and some others come out at the other end. The drift rate of a single electron in copper wire is about walking speed, but the transmission rate (time between one electron entering the wire and another leaving it) is close to the speed of light.
Although, BC, thermal motion is unlikely to have a net direction assuming no net thermal gradient in the wire.
If batteries provide the 'force' to get electrons in a circuit moving what happens to them when they reach the end of the circuit? What if all the electrons in the circuit have reached the end of the circuit won't it have 'run out' of them? Does the battery actually provide electrons??