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Neccesary for Electricity to Travel in a Loop?

Discussion in 'General Electronics' started by Mr. Berserker, Feb 15, 2004.

  1. Is it really neccesary for electricity to travel in a loop? Looking an
    example of a battery, with a conductor connected at the negative
    terminal, and a load somewhere down the line (such as a radio), but no
    connection to the positive terminal, I might think yes. The radio will
    not function. But this is a result of the nature of the power supply,
    yes? Wouldn't it be more accurate to say that all electricity needs to
    travel is a difference in potential? It seems that way with lightning
    after all. Look at the grounding in a marine setting (like on a boat);
    where does all that current go??
     
  2. Robert Baer

    Robert Baer Guest

    One needs a potential difference, AKA a *force* to move electrons;
    that is what one may experience in a lightning storm.
    However, there is always a full circle or circuit for electron flow
    (AKA "curent").

    Rocks fall downhill, the force is gravity.
    Something (some energy at some other time) "put" the rocks up there to
    begin with; so that could be considered the "circuit" or full circle for
    the "flow" of the rocks.
     
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