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Homework Help: Heat and electric current

  1. Mar 19, 2006 #1
    A 111 V electric iron draws 8.9 A of current. How much heat is developed per hour? Answer in units of J.

    P = IV
    P = U/t
    U = IVt
    U = 8.9(111)(60) = 59274 J

    Apparently I'm wrong and I don't know why.
  2. jcsd
  3. Mar 19, 2006 #2
    A = (C/s)

    You have 60 mins, your units have a missmatch.
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