engineering basic engineering circuit analysis, 7ed(solution manual)外语英文电子书

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1、Problem1.1If60Cofchargepassthroughanelectricconductorin30seconds,determinethecurrentintheconductor.SuggestedSolution∆Q60iA===2∆t30iA=2Problem1.2Ifthecurrentinanelectricconductoris2.4A,howmanycoulombsofchargepassanypointina30secondinterval?SuggestedSolution

2、∆=×∆=×=Qit2.43072C∆=QC72Problem1.3Determinethetimeintervalrequiredfora12-Abatterychargertodeliver4800C.SuggestedSolution∆Q4800∆=ts==400i12∆=ts400Problem1.4Alightningboltcarrying30,000Alastsfor50microseconds.Ifthelightningstrikesanairplaneflyingat20,000feet

3、,whatisthechargedepositedontheplane?SuggestedSolution−6∆=×∆=Qit30,0005010()×=1.5C∆=QC1.5Problem1.5Determinetheenergyrequiredtomove240Cthrough6V.SuggestedSolution∆=×∆=×wVQ62401440=J∆=wJ1440Problem1.6Determinetheamountofpowerabsorbedorsuppliedbytheelementsho

4、wnif(a)VV==4,2IA1(b)VV=−4,I=−2A1I+V1-SuggestedSolution(a)PW=×=4288Wabsorbed(b)PW=−−=()428()8WabsorbedProblem1.7Determinetheamountofpowerabsorbedorsuppliedbytheelementshownif(a)VV=−6,3I=A1(b)VV==6,I−3A1I+V1-SuggestedSolution(a)PW=−×=−()631818Wsupplied(b)PW=

5、×−=−631()818WsuppliedProblem1.8Determinethemissingquantityinthecircuitsshown.I=?++P=24WP=?V1=6VV1=12V--I=2A(a)(b)SuggestedSolution(a)PI=×=624⇒I=4AI=4A(b)PW=×−=−12()224P=24WsuppliedProblem1.9Determinethemissingquantityinthecircuitsshown.I=?I=-2A--P=12WP=-24

6、WV1=-6VV1=?++(a)(b)SuggestedSolution(a)PI=−×=()612⇒I=−2AI=−2A(b)PV=×−−=−()224⇒VV=−1211VV=−121Problem1.10Determinethemissingquantityinthecircuitsshown.I=-3AI=-4A+-P=?P=?V1=4VV1=-6V-+(a)(b)SuggestedSolution(a)PW=×−=−431()2P=12Wsupplied(b)PW=−×−=()()6424P

7、=24WabsorbedProblem1.11Determinethepowersuppliedtotheelementsshown.4A+12V-+28V4A-SuggestedSolutionPW=248×=1PW=81PW=8432×=2PW=322Problem1.12Determinethepowersuppliedtotheelementsshown.2A+14V--28V+2ASuggestedSolutionPW=428×=1PW=81PW2=−×=−(821)6PW=−162Problem

8、1.13Twoelementsareconnectedinseries,asshown.Element1supplies24Wofpower.Iselement2absorbingorsupplyingpower,andhowmuch?+13V--26V+SuggestedSolutionIfelement1issupplyingpower,thedirectionofthecurrentmustbeasshow