edugen Wiley plus.com Wiley PLUS Edugen Wiley Plus.com Wiley PLUS Suppose That T
ID: 1532969 • Letter: E
Question
edugen Wiley plus.com Wiley PLUS Edugen Wiley Plus.com Wiley PLUS Suppose That The tungsten wire has a radius of 0.078 mm and is heated fro Tungsten Wine 50 M Long And Has A Diameter Return to Blackboard Wiley PLUS Cutnel Physics, 10e Help I System Announcements Assig Assignment Open Assignment PRINTER VERSION BACK NEXT ASSIGNMENT RESOURCES Chapter 20, Problem 018 GO HW #4 20 Part 1 chaotor 20 Problem A tungsten wire has a radius of 0.078 mm and is heated from 20.0 to 1374 oc. The temperature coefficient of resistivity is a 4.5 x 10-3 (co When 180 v is applied across the ends of the hot wire, a current of 2.3 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire Chapter 20 Problem 005 GO 20, Numb Units the tolerance is +/-5% pter 20 Prob 18 GO SHow HINT Go TUTORIAL Chapter 20 Proble LINK TO TEXT 028 By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Chapter 20 Proble Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWERS Chapter 20 Problem Earn Maximum Points available only if you 039 answer this question correctly in four attempts or less. Review Score Review Results by study MapleNet t 2000-2017 bv John Wilev B Sons, Inc. or related comoanies. All riahts rest License Agreement l Privacy Policy I 2000-2017 2ohn Wiley & Sons Inc. All Rights Reserved. A Division of lohn Wiley & Sons, Inc. Version 4.22.1.2Explanation / Answer
formula for reistance of wire varying with temperature is
R = R0 ( 1+ alpha del T)
R/R0 = ( 1 + alpha ( del T)
(V/I) ( 1/R0) = ( 1 + alpha ( del T)
A/ rho L= I/V ( ( 1 + alpha ( del T)
L = A/ rhoI/V* ( 1+ alph ( T2- T1)
= AV/rho I ( 1+ alpha( T2- T1)
= pi * ( 0.078 * 10^-3 )^2 * 180 V/ 5.6 * 10^-8 * 2.3 A ( 1+ 4.5 * 10^-3 ( 1374-20)
L = 3.76m
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.