工程电路分析（第九版）-习题解答.docx

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1、EngineeringCircuitAnalysis,91hEditionSelectedAnswersChapterOne11aChapterTwo1.（八）1.23ps;(b)IOm;(c)1.4K;(d)32nm;(e)13.56MHz；(f)2.021millimoles;(g)1.3I;（三）100m3.（八）1.121V；(b100mA；(c)1zs;(d)33.9997zs；(e)1.31fs;(f)10Ms;(g)10microseconds;（三）155.（八）373.15K;(b)255.37K;(c)0K;(d)149.14kW;(e)914mm;(f)1.61km7.9

2、13femtogalacticyears9.121W11.298mz13,11,25Okm215.6011C17.（八）9C;(b)-1C;(c)-10A19.（八）201times;(b)021.(a750mA；(b)023.-6,210,5Vf6.210uV25.（八）6pW;(b)10mW;(c)-20W27.-1Wz0.2Wr-0.6Wz14Wr350mA29.4W31.（八）10bulb5;(b)$4,799daily33.3.48hr35.（八）2.96hr;(b)2.5hr39.（八）42.32kW,-46kW,3.68kW;(b)041.707mA43.（八）1.98V,2.4

3、2V;(b)7.92sin44tV,9.68sin44tV49.（八）20microamperes;(b)IOmA;(c)cxp(-2t)amperes;(d)5()sn5tmA;(c)051.(b)2.26k53.3.9orless57.AWG2:/?=7.815m11;G=127.96SAWG14:R-(M26C;G=7.9365SAwG28:R=3.265C;G：0.30628S61.766ftz65ftChapterThree1.（八）5;(b)6;(c)63.（八）4;(b)path,yes-loop,no;(c)path,no-loop,no5.（八）4;(b)4;(c)4；(d)

4、neither,pathonly,bothpathandloop,neither7.（八）2A;(b)-2A9.9A11.2ohms13.47A17.（八）-13V,-1.86V;(b)5Vz625mA19.-4V21.-5.05V23.（八）insubsiptorder:2Vr2V,0333V,S/3Vr1033A,0.333A,10Ar9.67Ar0.333A;(b)true25.4.21A,-33.68W,6736W,17.21Wr83.30W27,500:413.2W2Vsource:-1.8!8mWIkC826.5WDepsource:-1.240mW2.2k:1.818mW29.0

5、.359V,26.38mA31.18.75Vz37.5W,56.25W33.857mV,-735mWz1.714W35.（八）-6V;(b)lV;(c)-5.5V37.-6mA39.（八）-36SVJb)43.2W41.（八）3A.3V;(b)Yes43.Flg（八）2ohm,2.33ohm,1ohm;Fig(b)0.545ohm,0.632ohmz0.75ohm45.(b)10V;(c)-20W47.2.66V49.7.32ohm51.（八）6.2V;(b)1V;(c)9V;(d)1;(e)1.167V;(f)0.3158V55.1.08Vz2.52V57.0.697VS9.（八）-10.9

6、cos100Otmicrovolts;(b-10.9cos1000tmV;(C)no;(dyes61.（八）3.78V;(b)2S.7mW;(c)No63.（八）5nodes,6loops,7branches；(b)-2A,1.21A,O.79A,0.526A,-0.263A;(c)-10.1VChapterFour1.（八）-2.1,0.40;(b)-8.7r8.7,-0.33.（八）v1=42.5V,v2=103V.v=82.9V5.1.625A7.952mA9.IVII.172V13.1.352A15.-1.84A17.1.55V19.-3.21V21.1W23.12V.7V25.7.1

7、4V.12.1V27.1.6A29.0.48V31.vl=9.9184Vv,=11.8386Vv3=9Vv4=5.596V33.i=1.130Aand=515.5mA35.=989.2mA,h=150.1mAandf,l=157.0mA37.IOV39.-261mA41.IW,IW43.i,=3=1.792AandVa=6.842V45.762mA.11.3W47.i1=1.325A.i2=2.325Aandi)=-1.675A49.5A.-1.5A.1.3A53.（八）4:(b)359.（八）5equations：(b)6equations61.1.63A63.8.83V65.0.742,-

8、0.194VChapterFive1.（八）1x3.18/11A/2/11AS.（八）2/3A;(b)50%;(c)3A7.（八）12.9Vr-7.37V9.2.455Vf0.5455Vz1.909V11.-0.34A15.2.6A17.（八）-578nA19.（八）Thesetwoelementscanbesource-transformedoa(9/4)Vvoltagesource(+”signup)inserieswitha0.75resistorinserieswiththe7Vsourceandthefar-left3resistor.(b)17.3W21.42V23.IB=(INR

9、N-Vo)(+1)RE)25. （八）5.4Vz2.2ohm;27. （八）SA,Sohm;(b)2SV,5ohm29. （八）1.43V,1.36mA,1.04kiloohm；(b)0.459mW31.（八）-0.29Vz1.5ohm；(b)13.7mW33.（八）364mAr1.77ohm;(b)45mW;(c)360mA35.（八）35ohmjb)35ohm37.（八）1.2ohm;(b)1.2ohm;(c)1.2ohm39.101milliohm41.100microamperes,1.43kiloohm43.1megaohm47.（八）-0.4V,1.2ohm;(b)1.2ohmSI

10、.（八）24V,7ohm;(b)24/7A;(c)7ohm53.6.9ohm57.1.eft:R=76.72,RB=94.8C,Re=48.82Right：R=8.91kkRb=3.98kvRe=14.4k59.75ohm63.（八）6.11ohm,-0.61V;(b)7.3mW69.(a_3.4ohm；(b)1.2Abecomes692.8mA.0.8Abecomes461.9mA,0.1Abecomes57.74mA.73.224mAChapterSix1.（八）-SV;(b)-2V;(c)-200sin5tV3.（八）10V;(b)2.2V;(c)07.（八）23ohm；(b)5.2oh

11、m;(c)46ohm,83Ohm13.27V17.350ohm19.2V23.（八）4.5V;(b)5.5V;(c)0.5V;(d)2sinlt+4.5V25.(aJ-31VJb)0.8V33.1.8V35.vout三-5V,Ttemp;vott三5V,T4s,iC=O.Forallothertimes,v=-O,St+3V.5.（八）44pF;(b)140pF;(c)170pF9.2pF,1.4pF,0.79pF11.(b)800V,2400V,48V13.（八）11nJ;(b)4.9nJ;(c)1.5nJ;(d)200J15.（八）-14VJb68nV17.(b)0,0,019.（八）O;

12、(b)72cs6tmV;(c)-204sin(10011t-9)V;(d)-6010,e,V；(e)(410-)(1-10/)*V21.（八）OV,1mA;(b)OV,1mA;(C)0.43mA;(d)140mA23.（八）v(-l)=-lV：(b)v(0)=-lV;(c)v(1.5)=-0.5V;(d)v(2.5)=-0.5V：(e)v(4)=0.67V：(Ov(5)=0.67V25.（八）-20mA;(b-20mA;(c)-16mA27.（八）810mJ;(b)1.6mJ29.（八）-18V;(b)-16V;(c)-25V;(d)-25V31.54SmF35.3.6F39.300pH43.

13、6.2F47.（八）v(t)=-28.8ejvV:(b)241.+20mA;(c)36e,r+40m49. 2.4SinIoV,9.6Vdv511.=-R，565.（八）88microamperes；(b)067.（八）-1.2mA;(b)1.32microjoules,130nJ69.（八）405microjoules;(b)noChapterEight1.（八）v()=5eXV;(b)5Vr2.8V,0.017V;(c)280microjoules,88microjoules,3.2nJ3.（八）v()=11.359e-,n,wkV；(b)27mJ5.（八）10ms;(b)100ms;(C

14、)Is7.（八）1.05s；(b)/,(r)=380.95。mA:670mW9.（八）20V,7.4V.5.7V;(b)1.96JII.（八）680microjoules；(b675e,12v,i.5626e,12mmW15.（八）12010years,Hb7900years19.（八）SH;(b)2.5J,340mJ,46mJ,6.2mJ21.100023.（八）0V,16nJ;(b)1.2V,16nJ;(c)2.8nJ,1.2V;(d)360aJ,1.2V25.（八）/.(/)=-100fA;(b)-100microamperes,-52microamperes27.（八）-211mA,12