Charge drift for a light bulb?

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    • November 25, 2009 at 10:39 am #12710
      Oargarep
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      • Posts: 2

      I was reading a science book when I saw a question.-
      It said that the average drift on a very small amount of charge passing through a copper wire is 1mm(millimetre) per second. But how come that when we switch on a light bulb, it immedietly lights up being quite far from the switch. The only way of passing electrons being the long route of the wire.

    • December 7, 2009 at 9:56 pm #31196
      Pork_Hunt
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      • Posts: 349

      The wire is already full of electrons, I reckon. Like turning on a tap on a full hose…

      Anyone else?

    • December 8, 2009 at 1:15 am #31200
      blurrc
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      • Posts: 101

      I think pork correct. Like when you plug something into a wall socket, the cable becomes full of power so when you turn the appliance on it is already circulating electricity

    • January 1, 2010 at 6:09 am #28898
      PandaBear
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      • Posts: 1866

      Every atom in everything has certain # of electrons in it.

      Electrons can flow in some (=conductors) and not in others (=insulators).

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