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Negative Voltage

  1. Apr 24, 2012 #1
    I just completed a problem regarding a Millikan Oil Drop Experiment. I ended up with a negative voltage in the solution.

    I am just trying to understand negative voltage. Does it mean that the current will travel from - to + instead of the conventional + to -?
     
  2. jcsd
  3. Apr 24, 2012 #2

    phinds

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    yes it does
     
  4. Apr 25, 2012 #3

    haruspex

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    Umm.. I don't think so. Why would it do that? Conventionally signed current will always flow from the higher (more +ve) potential to the lower.
     
  5. Apr 25, 2012 #4
    If the "-" represents the ground or reference then I believe the "+" can have any potential difference whether positive or negative. In such a case though the "-" terminal will have the higher potential and so conventional current will run from it to the "+" terminal.
     
  6. Apr 25, 2012 #5

    phinds

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    Yeah, that's what I meant, but my simple "yes" was a bit misleading, as haruspex correctly pointed out.
     
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