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Electric potential

  1. May 16, 2010 #1
    my teacher gave me a handout that said Vab = Vb- Va

    However my textbook says Vab = Va-Vb..

    Which one is correct? By the way Va means voltage at a and Vb equals voltage at b
  2. jcsd
  3. May 16, 2010 #2
    They are the same thing. a and b are arbitrary letters to denote which two points you are looking at.
  4. May 16, 2010 #3


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    Both are correct, as long as you choose one definition and stick with it. Which one to use is just a matter of convention.

    EDIT: But they are not the same thing: Vab = -Vba.
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