棰??涓??濉?┖棰?/p>浜?????棰?/p>涓??澶?」??????璁＄?棰?/p>?誨?寰?? 璇??浜杭/p>寰?? 涓??濉?┖棰?/p>錛??絀猴? ????憋? ???1???涓??????ㄧ?婧?????????佃礬涓?嬌?ㄦ?錛??????????0???濡??灝??L璺???患i>R涓茶?????板?涓??婧??錛???患i>R10縐???墊????36??????錛???剁??????? 3.6 ???錛?i>RL錛?i>R錛?2????????場涓茶??ュ??靛?涓?????璺?腑錛????????涓杭i>P?布/sub>錛????????涓杭i>P涔?/sub>錛????????涔??騫惰??ュ?????佃礬涓???????????涓杭u> ??璇??浜杭/p>寰?? 浜?????棰?/p>錛??絀猴? ????憋? ???3???涓???靛?甯??姝g?錛????????寮??涓??搴???ㄥ?涓?釜???緙?????瀵間????楠???ㄧ??????????楠???ㄧ?綆?????瑙??灝???充?瀵間???甫?墊??碉?涓?????娉??紜????? 錛?/p>A. ????藉甫璐?? B.????藉甫姝g?C. ???甯???墊?涓?甫?鄲nbsp; D.???甯???墊?涓?甫??4???涓??娉＄????涓?????PZ220???100??/st1:chmetcnv>錛??瀹ゆ俯涓??浼??娉??寰?????涓???諱負R1錛???ㄦ?甯稿伐浣?????浼??娉??寰?????涓???諱負R2=48.4嬈э????R2姣?i>R1澶П0??互涓??榪???變?錛?nbsp; 錛?/p>A. ???嬈℃?寰???誨?蹇???????nbsp; B.???嬈℃?寰???誨??????/p>C.瀵瑰ぇ澶??瀵間??ヨ?錛?俯搴??楂???甸?瓚?ぇ錛??涓??浜??縐??浣?/p>D.涓??浠??瀵間?錛????俯搴??楂???昏?澶?5???涓?釜1.5嬈х??甸?涓??涓???靛?涓茶?????扮????7浼???墊?涓??瑕??浣跨??靛?娑????????8??????涓??婧??緇???靛????嫻???芥?錛?nbsp; 錛?/p> A. 2瀹?nbsp; B. 3.5瀹?nbsp; C. 2.67瀹?nbsp; D. 2.31瀹?6?????i>L?ュ??靛?涓杭i>U???璺???訛?????靛???負25????ュ???i>L涓??涓???患i>R涓茶?????ュ????璺???訛???i>L娑????????涓罕6???璁劇?涓???諱????????甸?娑??????????? 錛?/p> A. 2?Ζnbsp; B. 4?Ζnbsp; C. 8?Ζnbsp; D. 9??璇??浜杭/p>寰?? 涓??澶?」??? 錛??絀猴? ????憋? ??? 7????敬??ず?佃礬錛??婧????浼?????????甸?R1=20嬈э?褰???秤???????靛?琛énbsp; ??nbsp; ??ず?頒?姣??1錛?錛?nbsp; ??nbsp; ??ず?頒?姣??5錛?錛??涓???ゆ?姝g`???錛?nbsp; 錛?/p>A. R2=20嬈Еnbsp; B. R3=30嬈Еnbsp; C.?墊?琛énbsp; ??ず?頒負0.1瀹?D.?佃礬涓??????誨???負0.8??/p> 璇??浜杭/p>寰?? ???璁＄?棰?/p> 錛??絀猴? ????憋? ??? 8??????????安20V???婧??浣跨??訛????涓罕00W錛?????榪?釜?墊?榪???垮?綰匡????榪????嬌???瀹?????涓焊1W錛??瀵肩嚎涓??????靛???? 9??/p>濡?? 1??ず???璺???墊??靛?淇??涓??錛??寮??S????訛??墊?琛ㄧ?紺烘???.5瀹??寮?????????靛?琛ㄧ?紺烘???浼???甸?R2??????0.2???????剁?嫻??紺烘??????10??/p>???瀹????? 4.8浼??灝??娉″?瀹???甸?R騫惰??ㄦ?涓??璺?腑錛??娉℃?甯稿????騫茶礬涓???墊???.2瀹???ユ?瀹?滑涓茶??ㄥ?涓??璺?腑錛????場?????????瀹??瀹?????1錛?錛???跺??肩??患i>R娑??????????.24????????場???瀹?????澶????? 11??/p>濡??3??ず錛?i>R1=10嬈э?R2???澶х??誨?涓撼0嬈э??墊??靛??間負8浼??姹???誨?R2榪???佃礬????諱負澶?ぇ?訛?R2涓??????靛????澶э???ぇ涓哄?灝?? ???絳?? 涓??濉?┖棰?/p> 1??nbsp;[瑙f?] 姝ら?????佃礬?舵?涓轟袱涓???朵????L?存??ュ??墊?涓ょ?錛????????涓捍0W???姝ょ????????圭?PL=U 2錛?i>RL=40W???浜????i>L??i>R涓茶?????ュ????璺???甸?R?????負PR=WR錛?i>t=36J錛?0S=3.6W錛??PR=I2R=(U錛?R錛?i>RL))2?患i>R=3.6W錛??涓ょ??舵?????圭?姹??PL錛?i>PR=(R錛?i>RL)2錛?i>R?患i>RL=40W錛?.6W錛??姹??RL錛?i>R=9錛???i>RL錛?i>R=1錛?錛??棰????????涓茶??佃礬涓?i>PL?詫?PR=RL錛?i>R=9錛?錛??PL?步9PR=9?3.6W=32.4W???紜??妗?負??st1:chmetcnv TCSC= 0 NumberType= 1 Negative= False HasSpace= False SourceValue= 32.4 UnitName= ?? w:st= on >32.4??/st1:chmetcnv>??2??nbsp;[瑙f?]褰?袱??覆????ョ????瀹???佃礬涓???層?涔?袱?????????涓杭i>P?布/sub>??i>P涔?/sub>錛?i>P?布/sub>=U2/R?布/sub>錛?sub>錛?????涓ょ?騫惰??ㄧ?璺?腑錛?i>P?布/sub>?步U2錛?i>R?布/sub>???浠ゼ/p>P?布/sub>?詫?P?布/sub>=U2錛?i>R?布/sub>梅U?布/sub>2錛?i>R?布/sub>=(U錛?i>U?布/sub>)2=錛?/p>?醇sub>??/p>浜?????棰?/p>3??nbsp;[瑙f?]楠???ㄧ?綆?????瑙??灝????????姝g??峰?灝?????灞??涓??姝g??峰?????劇?榪??瀵間????縐???峰?寮??緇?????璇存?瀵間???????甯???電?錛??浣?甫璐??????界????濡??瀵間?涓?甫?碉????甯???電???????錛??浜???墊?搴??瀵間????绔???虹?寮???佃????璐???鳳?榪??浼???板?縐???封?????佃?錛??縐??搴???蜂?浼????????姝g??鋒??稿?浣??錛?嬌綆??涓??姝g??峰?灝????互瀹?????妗??錛?甫璐?????甯???藉??姐?姝g`絳??涓好??4??nbsp;[瑙f?]姝ら??????????楠?????姝h(huán)?錛?富瑕??璁╁????榪??瑙g?涓??涓???′歡錛?俯搴??涓???甸??間??????繁瀛??瀵瑰獎???浣???誨ぇ灝??绱????В???浣???葷?澶у?璺??浣???垮害????㈢Н?????互??俯搴???籌?澶ч????浣???甸??奸?娓╁害???楂??澧?ぇ錛?釜???澶?????娉℃?甯稿???????????患sub>嬈э???場涓?????????甸?寰??錛??浠ユ?紜??璇存?????5??nbsp;[瑙f?]???灝???靛?娑?????P???涓焊????舵??????i>U???榪??嫻?i>I???韜???患i>R????ワ??ㄧ??ㄦ?涓?.5嬈х??甸?涓茶??ǚ浼??婧?????????ㄧ??ㄧ??墊????涓??璺?腑???嫻?????I1=I2錛??錛?В寰???靛?????誨???負R=2嬈у?R=1.125嬈э?浠e?????墊?寮哄害????藉?涓杭i>I=2瀹??I=2.67瀹??姝g`??」涓毫????6??nbsp;[瑙f?]姝ら???負涓ょ??佃礬?舵?錛????i>L?存??ュ??墊?涓ょ?錛?i>PL=25W錛???舵?????烘?紼?i>PL=U 2錛?i>RL=25W錛????i>L涓???患i>R涓茶?????板??佃礬涓????i>L涓ょ??靛?涓杭i>U2錛???舵?????烘?紼?sub>錛??姝や??圭?姹??錛?/p>錛??U錛?i>UL=5錛?,UL錛?i>UR=4錛?錛????????寮??UL錛?i>UR=RL錛?i>R=4錛?錛??涓茶??佃礬涓??PL錛?i>PR=RL錛?i>R=4錛?錛??PR=4W???紜??妗?負B??涓??澶?」??? 7??CD ???璁＄?棰?/p> 8??nbsp;[瑙f?]????靛?U=220V?剁????P=100W錛????負?剁??靛?涓杭i>U?詫?涓??娉＄??諱?????規(guī)?P=U2錛?i>R錛??錛?i>P錛?i>P?步U2錛?i>U1錛??浠ゼ/p>????訛???場涓ょ??????i>U??/sub>=I??/sub>R??/sub>=484惟?9/22=198V????訛????瀵肩嚎涓???靛?涓猴?U瀵技/sub>=U錛?i>U??/sub>=220V錛?98V=22V???瀵肩嚎涓??????靛????P瀵技/sub>錛?i>P?步IU瀵技/sub>錛?i>IU?詫???場???綰考i>I?稿?錛??P瀵技/sub>=22V?81W錛?98V=9W???瀵肩嚎涓????????涓汗??? 9??nbsp;[瑙f?]姝ら???負涓ょ??佃礬?舵?錛??涓??褰???秤????訛?R2琚???ㄧ?璺??R1?茬??ユ??墊?涓ょ?錛??璺?腑???嫻?負0.5瀹???辨??舵?????圭?I1=U錛?i>R1=0.5A???寮??S??????R1??i>R2涓茶?涓虹?浜???佃礬?舵?錛???朵??硅 嫻??R1涓ょ??靛?U1=4V????患i>R2?????i>P2涓罕.2????辯?浜???舵?涓??嫻??絳?????寰??紼??I2=U1錛?i>R1??i>I2=P2錛?U錛?i>U1)錛??4V錛?i>R1=1.2W錛?U錛?V)???絎?????浜????????紼??绔??瑙e?R1=20惟??唬?ゼi>I2=U1錛?i>R1=4V錛?0惟=0.2A???紜??妗?負??.2??? 10??nbsp;[瑙f?]?規(guī)?P=I2R錛???卞茍???璺?sub>??/p>?變覆???璺??嫻??絳?sub>?[/p>????????В寰??I=0.4A錛?i>PL=U?患i>I1=1.92W. 11??nbsp;[瑙f?]璁炯i>R2榪???佃礬涓???甸?涓杭i>Rx?訛??舵?????靛????澶т負P錛????i>P=I2R???P=I2Rx=(U錛?Rx錛?i>R1))2?患i>Rx錛?sub>錛?????瀛???圭?錛??瀹???規(guī)?錛??=b2錛?st1:chmetcnv TCSC= 0 NumberType= 1 Negative= False HasSpace= False SourceValue= 4 UnitName= ac w:st= on >4ac?グ姹?В???涓???寸?涓哄?浜?i>Rx??????嬈℃?紼?sub>錛??涓杭i>Rx瀛??涓??姝f?錛??浠モ?=(20P錛?4)2錛??P?100P?グ錛?В涓??寮??P?ケ.6?????互R2娑?????澶х????涓罕.6???灝?i>P=1.6??唬?ュ??圭???互姹??Rx=10惟??/p>">

涔?勾綰х???腑???妯℃?璇??涓??妗?В??/p>

棰??

涓??濉?┖棰?/p>

浜?????棰?/p>

涓??澶?」???

???璁＄?棰?/p>

?誨?

寰??

 

 

 

 

 

 

璇??浜杭/p>

寰??

 

 

涓??濉?┖棰?/p>

錛??絀猴? ????憋? ???

1???涓??????ㄧ?婧?????????佃礬涓?嬌?ㄦ?錛??????????0???濡??灝??L璺???患i>R涓茶?????板?涓??婧??錛???患i>R10縐???墊????36??????錛???剁???????  3.6   ???錛?i>RL錛?i>R錛?

2????????場涓茶??ュ??靛?涓?????璺?腑錛????????涓杭i>P?布/sub>錛????????涓杭i>P涔?/sub>錛????????涔??騫惰??ュ?????佃礬涓???????????涓杭u>            ??

璇??浜杭/p>

寰??

 

 

浜?????棰?/p>

錛??絀猴? ????憋? ???

3???涓???靛?甯??姝ｇ?錛????????寮??涓??搴???ㄥ?涓?釜???緙?????瀵間????楠???ㄧ??????????楠???ㄧ?綆?????瑙??灝???充?瀵間???甫?墊??碉?涓?????娉??紜?????    錛?/p>

A. ????藉甫璐??          B.????藉甫姝ｇ?

C. ???甯???墊?涓?甫?鄲nbsp;   D.???甯???墊?涓?甫??

4???涓??娉＄????涓?????PZ220???100??/st1:chmetcnv>錛??瀹ゆ俯涓??浼??娉??寰?????涓???諱負R1錛???ㄦ?甯稿伐浣?????浼??娉??寰?????涓???諱負R2=48.4嬈э????R2姣?i>R1澶П0??互涓??榪???變?錛?nbsp;   錛?/p>

A. ???嬈℃?寰???誨?蹇???????nbsp;        

B.???嬈℃?寰???誨??????/p>

C.瀵瑰ぇ澶??瀵間??ヨ?錛?俯搴??楂???甸?瓚?ぇ錛??涓??浜??縐??浣?/p>

D.涓??浠??瀵間?錛????俯搴??楂???昏?澶?

5???涓?釜1.5嬈х??甸?涓??涓???靛?涓茶?????扮????7浼???墊?涓??瑕??浣跨??靛?娑????????8??????涓??婧??緇???靛????嫻???芥?錛?nbsp;   錛?/p>

   A. 2瀹?nbsp;   B. 3.5瀹?nbsp;   C. 2.67瀹?nbsp;   D. 2.31瀹?

6?????i>L?ュ??靛?涓杭i>U???璺???訛?????靛???負25????ュ???i>L涓??涓???患i>R涓茶?????ュ????璺???訛???i>L娑????????涓罕6???璁劇?涓???諱????????甸?娑???????????    錛?/p>

    A. 2?Ζnbsp;   B. 4?Ζnbsp;   C. 8?Ζnbsp;   D. 9??

璇??浜杭/p>

寰??

 

 

涓??澶?」???

 

錛??絀猴? ????憋? ???

 

 

7????敬??ず?佃礬錛??婧????浼?????????甸?R1=20嬈э?褰???秤???????靛?琛énbsp;  ??nbsp;  ??ず?頒?姣??1錛?錛?nbsp;  ??nbsp;  ??ず?頒?姣??5錛?錛??涓???ゆ?姝ｇ‘???錛?nbsp;   錛?/p>

A.  R2=20嬈Еnbsp;   B. R3=30嬈Еnbsp;   C.?墊?琛énbsp;  ??ず?頒負0.1瀹?D.?佃礬涓??????誨???負0.8??/p>


璇??浜杭/p>

寰??

 

 

???璁＄?棰?/p>

 

錛??絀猴? ????憋? ???

 

 

8??????????安20V???婧??浣跨??訛????涓罕00W錛?????榪?釜?墊?榪???垮?綰匡????榪????嬌???瀹?????涓焊1W錛??瀵肩嚎涓??????靛????

9??/p>

濡??

 

1??ず???璺???墊??靛?淇??涓??錛??寮??S????訛??墊?琛ㄧ?紺烘???.5瀹??寮?????????靛?琛ㄧ?紺烘???浼???甸?R2??????0.2???????剁?嫻??紺烘??????

10??/p>

???瀹?????

 

4.8浼??灝??娉″?瀹???甸?R騫惰??ㄦ?涓??璺?腑錛??娉℃?甯稿????騫茶礬涓???墊???.2瀹???ユ?瀹?滑涓茶??ㄥ?涓??璺?腑錛????場?????????瀹??瀹?????1錛?錛???跺??肩??患i>R娑??????????.24????????場???瀹?????澶?????

11??/p>

濡??

3??ず錛?i>R1=10嬈э?R2???澶х??誨?涓撼0嬈э??墊??靛??間負8浼??姹???誨?R2榪???佃礬????諱負澶?ぇ?訛?R2涓??????靛????澶э???ぇ涓哄?灝??

 

 

???絳??

 

涓??濉?┖棰?/p>

 

1??nbsp;[瑙ｆ?]

    姝ら?????佃礬?舵?涓轟袱涓???朵????L?存??ュ??墊?涓ょ?錛????????涓捍0W???姝ょ????????圭?PL=U 2錛?i>RL=40W???浜????i>L??i>R涓茶?????ュ????璺???甸?R?????負PR=WR錛?i>t=36J錛?0S=3.6W錛??PR=I2R=(U錛?R錛?i>RL))2?患i>R=3.6W錛??涓ょ??舵?????圭?姹??PL錛?i>PR=(R錛?i>RL)2錛?i>R?患i>RL=40W錛?.6W錛??姹??RL錛?i>R=9錛???i>RL錛?i>R=1錛?錛??棰????????涓茶??佃礬涓?i>PL?詫?PR=RL錛?i>R=9錛?錛??PL?步9PR=9?3.6W=32.4W???紜??妗?負??st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="32.4" UnitName="?? w:st="on">32.4??/st1:chmetcnv>??

2??nbsp;[瑙ｆ?]

褰?袱??覆????ョ????瀹???佃礬涓???層?涔?袱?????????涓杭i>P?布/sub>??i>P涔?/sub>錛?i>P?布/sub>=U2/R?布/sub>錛?sub>錛?????涓ょ?騫惰??ㄧ?璺?腑錛?i>P?布/sub>?步U2錛?i>R?布/sub>???浠ゼ/p>

P?布/sub>?詫?P?布/sub>=U2錛?i>R?布/sub>梅U?布/sub>2錛?i>R?布/sub>=(U錛?i>U?布/sub>)2=錛?/p>

?醇sub>??/p>

浜?????棰?/p>

3??nbsp;[瑙ｆ?]

楠???ㄧ?綆?????瑙??灝????????姝ｇ??峰?灝?????灞??涓??姝ｇ??峰?????劇?榪??瀵間????縐???峰?寮??緇?????璇存?瀵間???????甯???電?錛??浣?甫璐??????界????濡??瀵間?涓?甫?碉????甯???電???????錛??浜???墊?搴??瀵間????绔???虹?寮???佃????璐???鳳?榪??浼???板?縐???封?????佃?錛??縐??搴???蜂?浼????????姝ｇ??鋒??稿?浣??錛?嬌綆??涓??姝ｇ??峰?灝????互瀹?????妗??錛?甫璐?????甯???藉??姐?姝ｇ‘絳??涓好??

4??nbsp;[瑙ｆ?]姝ら??????????楠?????姝ｈ?錛?富瑕??璁╁????榪??瑙ｇ?涓??涓???′歡錛?俯搴??涓???甸??間??????繁瀛??瀵瑰獎???浣???誨ぇ灝??绱????В???浣???葷?澶у?璺??浣???垮害????㈢Н?????互??俯搴???籌?澶ч????浣???甸??奸?娓╁害???楂??澧?ぇ錛?釜???澶?????娉℃?甯稿???????????患sub>嬈э???場涓?????????甸?寰??錛??浠ユ?紜??璇存?????

5??nbsp;[瑙ｆ?]

???灝???靛?娑?????P???涓焊????舵??????i>U???榪??嫻?i>I???韜???患i>R????ワ??ㄧ??ㄦ?涓?.5嬈х??甸?涓茶??ǚ浼??婧?????????ㄧ??ㄧ??墊????涓??璺?腑???嫻?????I1=I2錛??錛?В寰???靛?????誨???負R=2嬈у?R=1.125嬈э?浠ｅ?????墊?寮哄害????藉?涓杭i>I=2瀹??I=2.67瀹??姝ｇ‘??」涓毫????

6??nbsp;[瑙ｆ?]

姝ら???負涓ょ??佃礬?舵?錛????i>L?存??ュ??墊?涓ょ?錛?i>PL=25W錛???舵?????烘?紼?i>PL=U 2錛?i>RL=25W錛????i>L涓???患i>R涓茶?????板??佃礬涓????i>L涓ょ??靛?涓杭i>U2錛???舵?????烘?紼?sub>錛??姝や??圭?姹??錛?/p>

錛??U錛?i>UL=5錛?,UL錛?i>UR=4錛?錛????????寮??UL錛?i>UR=RL錛?i>R=4錛?錛??涓茶??佃礬涓??PL錛?i>PR=RL錛?i>R=4錛?錛??PR=4W???紜??妗?負B??

涓??澶?」???

 

7??CD

???璁＄?棰?/p>

 

8??nbsp;[瑙ｆ?]

????靛?U=220V?剁????P=100W錛????負?剁??靛?涓杭i>U?詫?涓??娉＄??諱?????規(guī)?P=U2錛?i>R錛??錛?i>P錛?i>P?步U2錛?i>U1錛??浠ゼ/p>

????訛???場涓ょ??????i>U??/sub>=I??/sub>R??/sub>=484惟?9/22=198V????訛????瀵肩嚎涓???靛?涓猴?U瀵技/sub>=U錛?i>U??/sub>=220V錛?98V=22V???瀵肩嚎涓??????靛????P瀵技/sub>錛?i>P?步IU瀵技/sub>錛?i>IU?詫???場???綰考i>I?稿?錛??P瀵技/sub>=22V?81W錛?98V=9W???瀵肩嚎涓????????涓汗???

9??nbsp;[瑙ｆ?]

姝ら???負涓ょ??佃礬?舵?錛??涓??褰???秤????訛?R2琚???ㄧ?璺??R1?茬??ユ??墊?涓ょ?錛??璺?腑???嫻?負0.5瀹???辨??舵?????圭?I1=U錛?i>R1=0.5A???寮??S??????R1??i>R2涓茶?涓虹?浜???佃礬?舵?錛???朵??硅〃嫻??R1涓ょ??靛?U1=4V????患i>R2?????i>P2涓罕.2????辯?浜???舵?涓??嫻??絳?????寰??紼??I2=U1錛?i>R1??i>I2=P2錛?U錛?i>U1)錛??4V錛?i>R1=1.2W錛?U錛?V)???絎?????浜????????紼??绔??瑙ｅ?R1=20惟??唬?ゼi>I2=U1錛?i>R1=4V錛?0惟=0.2A???紜??妗?負??.2???

10??nbsp;[瑙ｆ?]

?規(guī)?P=I2R

錛??

?卞茍???璺?sub>??/p>

?變覆???璺??嫻??絳?sub>?〖/p>

????????В寰??I=0.4A錛?i>PL=U?患i>I1=1.92W.

11??nbsp;[瑙ｆ?]

璁炯i>R2榪???佃礬涓???甸?涓杭i>Rx?訛??舵?????靛????澶т負P錛????i>P=I2R???

P=I2Rx=(U錛?Rx錛?i>R1))2?患i>Rx錛?sub>錛?????瀛???圭?錛??瀹???規(guī)?錛??=b2錛?st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="4" UnitName="ac" w:st="on">4ac?グ姹?В???涓???寸?涓哄?浜?i>Rx??????嬈℃?紼?sub>錛??涓杭i>Rx瀛??涓??姝ｆ?錛??浠モ?=(20P錛?4)2錛??P?100P?グ錛?В涓??寮??P?ケ.6?????互R2娑?????澶х????涓罕.6???灝?i>P=1.6??唬?ュ??圭???互姹??Rx=10惟??/p>


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