Saturday, 6 September 2014

electromagnetism - Does a battery push and pull or only push?


I've seen many analogies comparing a battery to a pump. The negative terminal pushes electrons into the wire which causes a chain reaction of the electrons in front of it moving forward, a lot like a pump.


Does the positive terminal do the opposite? Can it be likened to a vacuum that sucks electrons while the negative terminal pushes them?


Or is the positive more like a passive sink that just absorbs electrons?




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