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Homework Help: Thermistor's temperature problem

  1. Nov 29, 2009 #1
    1. The problem statement, all variables and given/known data

    A thermistor's temperature dependence is given by R=R0eb/t
    where R is in ohms T is in Kelvins R0 and B are constants to be found.

    a) If R =7360 at the ice point and 153 at steam point find R0 and B

    2. Relevant equations

    3. The attempt at a solution

    I took logs so

    rearranged so

    then get simultaneous equations but the constant i am trying to find so for this example B are just going to cancel?

    (Ln153)x373.15/B = (Ln7360)x273.15/B

    Thanks in advance
  2. jcsd
  3. Nov 29, 2009 #2


    User Avatar
    Gold Member

    Re: Thermistor

    Shouldn't that be LnR=LnR0 + B/T ?
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