|Mar19-06, 10:49 PM||#1|
Heat and electric current
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.
|Mar19-06, 10:52 PM||#2|
A = (C/s)
You have 60 mins, your units have a missmatch.
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