Heat and electric current


by AdnamaLeigh
Tags: current, electric, heat
AdnamaLeigh
AdnamaLeigh is offline
#1
Mar19-06, 10:49 PM
P: 44
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.
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Cyrus
Cyrus is offline
#2
Mar19-06, 10:52 PM
Cyrus's Avatar
P: 4,780
A = (C/s)

You have 60 mins, your units have a missmatch.


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