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Finding resistance

  1. Feb 26, 2009 #1
    1. The problem statement, all variables and given/known data
    If a device uses 3 ampere and a 120 Volt, what is the resistance of the material?

    2. Relevant equations
    I think it's R=120/3

    3. The attempt at a solution My answer is 40 but I don't know 40 what? I don't know if the answer is right.
  2. jcsd
  3. Feb 26, 2009 #2


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    Homework Helper

    Your answer is right. Unit of resistance is ohm.
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