Homework+Ch+25 - 43‘ g.V 12,000v s I= €fl=625A ‘7...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 43‘ g .V: 12,000v s) I= €fl=625A ‘7 13:31?" 532m WWW ""7 W .V= Soooov PJR .) a”, .—-\—/-—-;: 3 $0 .'. End- Elansz—‘Pdaxxohl: H kw 32-323 59%“! 5h." Inna NJ. P, UuJo‘ r4). (3, a Canlaéhwty :7 V Current «1er «{7 If we fillet! 'H-t tfirm'é, 0! m m a” «’0’» HQ 4’1"”ch wIH, [.75 J: fig» :11”; f4 .m‘o w/ Wt’wfl‘w C0050!“ Id $10" as nub...) r Jp<<r FA. 3M4” {‘0};th of, H1} we vi” 4an a. Ed!" Wm)» .+ M max 651.44, um 11 5...": Th by?“ ax Jr [8 «my 1-, WA] 7% Sim 1* a} ‘He M I} mime?" ash/ht Dal-.21“) 1.15 5? fit 'Hu‘alt M I? 1% L7,». MW] A = ‘hrr‘ 5W0“ a“ flak-e] vngLdL‘. 6' "hw-a Q r. d No», «‘1 2.. “:6: R: ’3 R: Sq’ifi-x '«I AR _ 9 a , L. . £4475 v d 1“ R A => JR~ A» win: 1 V IL W ! \ ‘ 10:0 ’4 WLQ A“): «Ar?!- ’04, Alfi) 5» crew linearly 25.26 Total resistance R = 3.70M) Temperature coeflicient of carbon: 0:0 2 70.005(C“’)_1 Temperature coefficient of nichrome: aN : O.OO4(C")’1 R : R0 -|- RN : Rcofl —— aoAT) —|— RN0(1 + aNAT) : ROM1 “ 050C? — Toll + RN0(1 + (EMT — TOD : ROO(1 -- 050T) + RN0(1 —|— aNT) since To is 0 here : R00 -|- RNO -|- (06011700 + aNRNolT If we want the total resistance to be temperature independent, we must have (101300 + CENRNO : 0 R RNO : _ 00050 05N Therefore a R 2 R00 + Rm 2 (14 image 2 3.71m GIN plug in values for temperature coefficients —> R00 : 1644.449 RNO : R — R00 : 2055.569 25.71 (a) 2 V P = 7 R AP i P2 —P1 i Vgg/R—Vlg/R i V22 — V12 i 1052— 1172 i i 0.19 : 19 P1 P1 VIE/R V12 1172 % The negative sign indicates that the power output decreased. (b) The decrease in power leads to decrease in temperature, which means increase in resistance. This means that the percentage change in power output would be less than we calculated in part (a). ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern