- #1
lettertwelve
- 54
- 0
Homework Statement
A steam iron draws 8.0 A when connected to a potential difference of 120 V.
(a) What is the power rating of this iron? 960 W <<<<correct
(b) How many joules of energy are produced in 20.0 min?
320 J <<<incorrect why?
(c) How much does it cost to run the iron for 20.0 min at $0.010/kW·h?
.0032 $ <<<<correct
Homework Equations
for part b: 960*(20/60) = 320
whys it wrong?!