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Is this equation correct

  1. Sep 28, 2015 #1
    I have seen this in my book.Is this equation correct
    ##dW=F^→⋅dr^→##=##=-E^→.dr^→##
    I don't think it is correct because ##dW=F^→⋅dr^→##
    has unit of joule whereas ##- E^→.dr^→## it's unit is volt.
     
    Last edited: Sep 28, 2015
  2. jcsd
  3. Sep 28, 2015 #2

    A.T.

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    Science Advisor
    Gold Member

    It's hard to read, but I think it misses charge. V*C=J
     
  4. Sep 28, 2015 #3

    Nugatory

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    Staff: Mentor

    Any time the units don't balance you know something is wrong somewhere.

    By the way, in Latex, \vec{E} will appear as ##\vec{E}##... Often useful when working with vectors.
     
  5. Sep 28, 2015 #4

    jtbell

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    Staff: Mentor

    And if you want to make a vector out of a single letter like E, the curly braces are optional. \vec E works just as well to produce ##\vec E##. You need the braces only when the symbol is more than one character, e.g. \vec {AB} gives you ##\vec {AB}##. \vec AB on the other hand gives you ##\vec AB##.
     
  6. Sep 28, 2015 #5
    /vec{F}
     
  7. Sep 28, 2015 #6
    /vec{F}
     
  8. Sep 28, 2015 #7
    ##/vec{F}##
     
  9. Sep 28, 2015 #8
    I am not able to write vectors.
     
  10. Sep 28, 2015 #9
    You have to use the backslash \, not the front slash/.
    ##\vec{F}##
     
  11. Sep 28, 2015 #10
    \vec{F}
     
  12. Sep 28, 2015 #11
    And the ## before and after.
     
  13. Sep 28, 2015 #12
    ##\vec{F}## PERFECT!
     
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