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ID: 1536470 • Letter: I
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iPad 11:30 AM edugen wileyplus. com Assignment signment FULL SCREEN PRINTER VERSION .BACK NEXT ES Chapter 20, Problem 004 A coffee-maker contains a heating element that has a resistance of 21 n. This heating element is energized by a 120-V outlet. What is the current in the heating element? Number units Click if you would like to Show Work for this question Open Show Work By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your Question Attempts: 0 of 4 used SAVE FOR LATER SUBMIT ANSWER Earn Maximum Points available only if you answer this question correctly in four attempts or less. Copyright 2000-2017 by John Wiley & Sons, Inc. or related companies. All rights reserved. lacy Policy I 2000-2017 lohn Wiley Sons Inc. All Rights Reserved A Division of lohn Wiley &Sons; Inc. Version 4.22.1Explanation / Answer
Use Ohm's law "at a given temperature the current in the conductor is directly proportional to potentially difference across the conductor.
V=IR
120 = Ix21
The current I= 120/21=5.71A
The current in the heater is 5.71A.
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