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Ohm's law and i = v/r

  1. Feb 14, 2012 #1
    Hopefully this is a simple question.

    When a potential difference is applied, do charged particles begin to accelerate and then reach a terminal speed due to resistance where resistance would have to be proportional to that speed? In other words, if there was this magical material with zero resistance and a magical supplier, would i → ∞ as the equation shows?
  2. jcsd
  3. Feb 14, 2012 #2


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    The charged particles begin to accelerate when they feel electric field, but reach terminal velocity very soon because of collisions with the ions of the conductor and with each other.

    In case of a piece of zero-resistance metal and ideal voltage supply, the current will be infinity. But nothing is perfect :tongue2

  4. Feb 14, 2012 #3
    Ok, that is what I figured. Thanks. :)
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