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Flashlight battery - internal resistance?

  1. Feb 22, 2010 #1
    1. The problem statement, all variables and given/known data
    does a flashlight battery have an internal resistance? explain.

    this problem is for my lab, and we are farther ahead in lab than in lecture. so i haven't actually learned this material yet.

    2. Relevant equations
    i'm not really sure.

    -VB + VR + VM + VInt = 0
    but i don't think that's relevant here at all.
    it's more of a conceptual question i assume.

    3. The attempt at a solution
    well... as i said, we haven't actually learned this material. all i know is that our TAs told us that our battery in the lab had an internal resistance affecting its voltage. i don't really understand what being a flashlight would have to do with the workings of the battery.

    if anyone could help me to understand how i should go about finding my answer, that'd be wonderful. thank you!
  2. jcsd
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