Register to reply

Heat and electric current

by AdnamaLeigh
Tags: current, electric, heat
Share this thread:
Mar19-06, 10:49 PM
P: 42
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.
Phys.Org News Partner Science news on
Scientists develop 'electronic nose' for rapid detection of C. diff infection
Why plants in the office make us more productive
Tesla Motors dealing as states play factory poker
Mar19-06, 10:52 PM
Cyrus's Avatar
P: 4,777
A = (C/s)

You have 60 mins, your units have a missmatch.

Register to reply

Related Discussions
Probability current versus electric current Quantum Physics 6
Whats the difference between an electric field and an electric current? General Physics 3
Electric current and direct current circuits Introductory Physics Homework 14
Thermal Properties/Heat Current Introductory Physics Homework 0
Heat current through a spherical shell Introductory Physics Homework 2