Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

If time is removed from the equation Q=VxIxt, will it still be valid

  1. Mar 21, 2012 #1
    if time is removed from the equation Q=VxIxt, will it still be valid to be an equation of energy?
    i need that equation to estimate the heat transfer coefficient of a nichrome wire heated using direct current,but putting time to the equation makes everything complicated..

    (i'd read someone's post here that use the same equation but does not put time.. too bad i can't find that post again..)
     
  2. jcsd
  3. Mar 21, 2012 #2

    cepheid

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Re: q=VxIxt

    VI = power

    VIt = energy

    Which one do you want?
     
  4. Mar 21, 2012 #3

    sophiecentaur

    User Avatar
    Science Advisor
    Gold Member

    Re: q=VxIxt

    Did you check on the dimensions of that 'equation'?

    afaik, Q = It
    where does V come into it?
     
  5. Mar 21, 2012 #4

    cepheid

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Re: q=VxIxt

    It could be that Q means "heat" here, rather than electric charge. That is sort of what I assumed from the context.
     
  6. Mar 21, 2012 #5

    sophiecentaur

    User Avatar
    Science Advisor
    Gold Member

    Re: q=VxIxt

    OH yes. Makes sense. (I have just removed my blinkers!)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: If time is removed from the equation Q=VxIxt, will it still be valid
Loading...