å
«å¹´çº§ç³»ä¸å¦æ第ä¸æ¬¡æèç©çè¯é¢
ä¸ãéæ©é¢ï¼æ¯é¢2åï¼å
±16åï¼
1ãæ室éè£
æå¤ççµç¯ï¼ä¸æèªä¹ æ¶ï¼æ¯å¤å¼ä¸çç¯ï¼åï¼ï¼ ï¼
A æ»çµé»åå°ï¼æ»çµæµå¢å¤§ B æ»çµé»å¢å¤§ï¼æ»çµæµåå°
C æ»çµåä¸åï¼æ»çµé»ä¸å D æ»çµé»åå°ï¼æ»çµæµåå°
2ãä»æ¬§å§å®å¾å¯ä»¥å¯¼åºå
¬å¼ ã对çµé»çç解ï¼ä½ 认为æ£ç¡®çæ¯ï¼ ï¼
Aï¼å½çµåå¢å¤§æ¶ï¼çµé»ä¹å¢å¤§ Bï¼å½çµæµå¢å¤§æ¶ï¼çµé»åå°
Cï¼å½çµå为é¶æ¶ï¼çµé»ä¹ä¸ºé¶ Dï¼çµé»ç±å¯¼ä½æ¬èº«æ§è´¨å³å®ï¼ä¸çµæµãçµåæ å
³
3ãå¨æçµè·¯ä¸ï¼ä¸¤ç¯æ³¡ä¸¤ç«¯ççµåç¸çï¼ç±æ¤å¯ç¥ï¼ä¸¤ç¯çè¿æ¥æ¹å¼æ¯ï¼ ï¼
Aï¼ä¸å®æ¯ä¸²èç Bï¼ä¸å®æ¯å¹¶èç
Cï¼ä¸²èã并èé½æå¯è½ Dï¼ä¸²èã并èé½ä¸å¯è½
4ãä¸æ ¹é导线åä¸æ ¹éé¬åé线ï¼å®ä»¬çé¿çãç²ç»é½ç¸çãæå®ä»¬ä¸²èå°çµè·¯ä¸åï¼ ï¼
Aï¼ä¸¤æ ¹å¯¼çº¿ä¸¤ç«¯çµåç¸çï¼é导线çµæµå¤§
Bï¼ä¸¤æ ¹å¯¼çº¿ä¸¤ç«¯çµåãçµæµåå«ç¸ç
Cï¼é导线两端çµåå°ï¼é导线çµæµå°
Dï¼é导线两端çµåå°ï¼éè¿ä¸¤æ ¹å¯¼çº¿ççµæµç¸ç
5ãå¦å¾2两åªçµå表çæéåæå¨å»åº¦çæ£ä¸å¤®ï¼ä»¥ä¸å¤ææ£ç¡®çæ¯ï¼ ï¼
Aï¼éè¿R1ççµæµå°äºéè¿R2ççµæµ
Bï¼R1两端ççµåä¸R2两端ççµåç¸ç
Cï¼R1çµé»å¼å°äºR2çµé»å¼
Dï¼R1 ä¸R2两端çµåä¹åçäºçµæºçµå
6ãå¦å¾3æ示çµè·¯ï¼çµå表V1åV2å®å
¨ç¸åï¼é½æ3ä¼å15ä¼ä¸¤ä¸ªéç¨ï¼éåå¼å
³åï¼åç°ä¸¤ä¸ªçµå表æéå转çè§åº¦ç¸åï¼åï¼ ï¼
Aï¼R1:R2 = 1:4 Bï¼R1:R2 = 4:1
Cï¼R1:R2 = 1:5 Dï¼R1:R2 = 5:1
7ãè¶
导ææçåºç¨å
·æåå诱人çåæ¯ãåå¦ç§å¦å®¶å·²ç å¶åºå®¤æ¸©ä¸çè¶
导ææï¼ä½ 认为å®å¯ä½ä¸ååªç§ç¨éï¼ ï¼
Aãèªç½ç¯æ³¡çç¯ä¸ Bãçµçä¸ççµé»ä¸ Cãä¿é©ä¸ Dãè¿è·ç¦»è¾çµçº¿
8ãå¦å¾7çå个çµè·¯ä¸ï¼çµæºçµåUç¸åï¼R1ï¼R2ï¼çµè·¯çæ»çµé»ç±å°å°å¤§ç顺åºæ¯ï¼ ï¼
Aãç²ä¹ä¸ä¸ Bãä¸ä¸ä¹ç² Cãä¸ç²ä¹ä¸ Dãä¸ä¹ç²ä¸
äºã填空é¢ï¼æ¯ç©º1åï¼å
±12åï¼
9ã两èæ°å¹²çµæ± 串èåççµå为_______Vï¼å¹¶èåççµå为_______Vã
10ã两çµé»ä¸²èå¨20Vççµè·¯ä¸ï¼R1两端çµåæ¯5Vï¼R2é»å¼æ¯15Ωï¼R1çé»å¼æ¯_______Ωã
11ãå¦å¾4æ示çµè·¯ï¼çµæºçµåä¿æä¸åï¼å½å¼å
³Séååï¼æ»å¨åé»å¨çæ»çPåå·¦æ»å¨è¿ç¨ä¸ï¼ç¯æ³¡L1ç亮度å°_______ï¼ç¯æ³¡L2ç亮度å°_______ï¼å¡«âå亮ââåæâæâä¸åâï¼
12ãå¦å¾5æ示çµè·¯ä¸ï¼AB两端çµåUï¼8Vï¼ä¸ä¿æä¸åï¼å¦æR2两端çµåU2ï¼2Vï¼R1ï¼12Ωï¼é£ä¹éè¿R1ççµæµæ¯_______Aãè¥è¦éè¿å®ççµæµä¸º0.4Aï¼å¿
é¡»æAB两端çµåè°å°________Vã
13ãä¸ä¸ªå¯¼ä½ä¸¤ç«¯çµå为6Væ¶ï¼éè¿å¯¼ä½ççµæµæ¯0.3Aï¼å¯¼ä½ççµé»æ¯________Ω, 导ä½ä¸¤ç«¯çµå为3Væ¶ï¼ éè¿å¯¼ä½ççµæµæ¯_______A, 导ä½ä¸¤ç«¯çµå为0æ¶ï¼å¯¼ä½ççµé»æ¯______Ωã
14ãçµé»R1ãR2串èå¨çµè·¯ä¸ï¼å®ä»¬ä¸¤ç«¯ççµååå«ç¨U1ãU2表示ï¼éè¿å®ä»¬ççµæµåå«ç¨I1ãI2表示ï¼å·²ç¥ï¼R1>R2, åI1_______I2 , U1�0�1�0�1�0�1�0�1�0�1�0�1�0�1�0�1�0�1�0�1�0�1�0�1____U2 (å¡«â>âãâ<âæâ=â)ã
ä¸ãä½å¾ä¸å®éªé¢ï¼å
±13åï¼
15ãï¼1åï¼å¦å¾æ示çµé»ç®±ç示æ°æ¯ Ωã
16ãï¼2åï¼å¦å¾5æ示ï¼å½éç¨ä¸º0~3Væ¶ï¼çµå表æéç读æ°ä¸º Vï¼å½éç¨ä¸º0~15Væ¶ï¼çµå表æéç读æ°ä¸º Vã
17ãï¼6åï¼ä¸å¾æ¯âä¼å®æ³æµçµé»âçå®éªçµè·¯å¾ã
ï¼1ï¼ãå¨å¾ä¸çååå
å¡«å
¥çµæµè¡¨ãçµå表ç符å·ï¼
ï¼2ï¼ãæåå¦è§èæä½ï¼æ£ç¡®æµéï¼æµå¾3ç»å®éªæ°æ®åå«æ¯ï¼U1 = 2.4Vï¼I1 = 0.20Aï¼U2 = 4.5Vï¼I2 = 0.38Aï¼U3 = 6.0Vï¼I3 = 0.50Aãè¯·ä½ å¨è线æ¡å
为ä»è®¾è®¡ä¸ä¸ªè¡¨æ ¼ï¼å¹¶æè¿äºæ°æ®æ£ç¡®å¡«åå¨ä½ 设计çè¡¨æ ¼å
ã
ï¼3ï¼ãæ ¹æ®è¡¨æ ¼ä¸æ°æ®ï¼è¯·ä½ ç®åºå¾
æµçµé»Rx â Ωãï¼ä¿çæ´æ°ï¼
18ãï¼2åï¼ç²ãä¹ä¸¤å°ç¸è·40åç±³ï¼å¨ç²ãä¹ä¸¤å°ä¹é´æ²¿ç´çº¿æ¶è®¾äºä¸¤æ¡è¾çµçº¿ï¼å·²ç¥è¾çµçº¿æ¯åç±³ççµé»ä¸º0ï¼2欧ãç°è¾çµçº¿å¨æå¤åçäºçè·¯ï¼ä¸ºç¡®å®çè·¯ä½ç½®ï¼æ£ä¿®åå¨ç²å°å©ç¨çµå表ãçµæµè¡¨åçµæºæ¥æå¦å¾æ示çµè·¯è¿è¡æµéãå½çµå表ç示æ°ä¸º3ï¼0ä¼æ¶ï¼çµæµè¡¨ç示æ°ä¸º0ï¼5å®ï¼åçè·¯ä½ç½®ç¦»ç²å°çè·ç¦»ä¸º___________
19ã(2å)å¾8æ示æ¯å¦çå®éªä¸å¸¸ç¨çæ»å¨åé»å¨ãè¦æ¹åå
¶æ¥å
¥çµè·¯ä¸ççµé»å¤§å°ï¼è¥ä¸æ ¹å¯¼çº¿æ¥å¨Cæ¥çº¿æ±æ¶ï¼å¦ä¸æ ¹å¯¼çº¿åºæ¥å¨ æ¥çº¿æ±ä¸ï¼æä½ çæ¥æ³ï¼å®éªåæ»çPåºç§»å° 端 (åç¨å¾ä¸çåæ¯è¡¨ç¤º)ã
åã计ç®é¢ï¼å
±8åï¼
20ãï¼4åï¼æ导ä½ä¸¤ç«¯çµåæ¯12Vï¼éè¿å®ççµæµå¼ºåº¦æ¯0.9Aï¼æ¬²ä½¿éè¿å®ççµæµå¼ºåº¦ä¸º0.6Aï¼å å¨å®ä¸¤ç«¯ççµååºæ¯å¤å¤§ï¼
21ãå¦å¾æ示ççµè·¯ï¼R1ï¼30Ωï¼R2ï¼10Ωï¼å¼å
³Séååï¼çµæµè¡¨Aç示æ°ä¸º0.4Aï¼
æ±ï¼ï¼1ï¼çµæºçµåï¼2ï¼éè¿R2ççµæµï¼3ï¼å¹²è·¯ä¸ççµæµã
äºãå®éªæ¢ç©¶é¢ï¼å
±21åï¼
22ãï¼4åï¼ï¼1ï¼æåå¦å¨ç©çå°ç»æ´»å¨æ¶è®¾è®¡äºä¸ä¸ªçµè·¯ï¼å¨è¿æ¥æ¶å´åç°äºé®é¢ï¼ä¸åªé»å¼ä¸º10Ωçå°ç¯æ³¡è¦æ¥å¨6Vççµæºä¸æè½ä½¿å®æ£å¸¸åå
ï¼ä½ç°å¨ççµæºçµå为18Vã为äºä¿æ¤çµè·¯å¹¶è®©ç¨çµå¨æ£å¸¸å·¥ä½ï¼åº___________èä¸ä¸ªé»å¼ä¸º___________Ωççµé»ã
ï¼2ï¼åå解å³äºä¸é¢é®é¢ï¼ååç°ç°å¨å®éªå®¤åªæä¸åª5Ωã两åª10Ωãä¸åª30Ωåä¸åª60Ωççµé»ï¼èªæçåå¦ä»¬ï¼ä½ è½å¸®ä»è®¾è®¡åºä¸¤ç§æ¿ä»£æ¹æ¡åï¼ï¼åæ¸
æéçµé»åè¿æ¥æ¹å¼ï¼
æ¹æ³ä¸ï¼________________________________________________
æ¹æ³äºï¼________________________________________________
23ãï¼4åï¼ä¸è¡¨æ¯ä¸äºé¿1ç±³ã横æªé¢ç§¯ä¸º1毫米2ç导线å¨20âæ¶ççµé»ï¼åä½ï¼æ¬§ï¼
é¶ 0. 016 é 0. 096
é 0. 017 é
0. 20
é 0. 027 é°é 0. 44
é¨ 0. 052 éé¬åé 1. 10
ï¼1ï¼å°ä¸è¡¨è§æ ¼ä¸çé°é线åéé¬åé线串èå¨åä¸çµè·¯ä¸ï¼åéè¿é°éççµæµ_______éè¿éé¬åéççµæµãéé¬åé线ä¸ççµå_______é°é线ä¸ççµå(å¡«â大äºâãâå°äºâãæâçäºâ)ã
ï¼2ï¼åä¸è¡¨ä¸çéãé线åä¸æ ¹ï¼å¹¶èæ¥å¨åä¸çµè·¯ä¸ï¼éè¿å®ä»¬ççµæµä¹æ¯ä¸º_______,å®ä»¬ä¸¤ç«¯çµåä¹æ¯ä¸º___________ã
24ãï¼5åï¼å¨æµéå°ç¯æ³¡çµé»çå®éªä¸ï¼å°æåç°å®éªå®¤ä¸åªæçµæµè¡¨ï¼è没ææ¾å°çµå表ï¼ä¸è¿é¤äºçµæºãå¼å
³åå¾
æµçµé»åä¸ä¸ªä»¥å¤ï¼ä»è¿æ¾å°è¥å¹²å¯¼çº¿åä¸ä¸ªå·²ç¥é»å¼ä¸ºR0çå®å¼çµé»ï¼è¯·ä½ 帮ä»å©ç¨è¿äºå¨æï¼è®¾è®¡ä¸ä¸ªæµéæªç¥é»å¼çµé»Rxççµè·¯å¾ï¼å¹¶æ¨å¯¼åºRxç表达å¼ï¼è¯´æ表达å¼ä¸åç©çéçæä¹ï¼ã
25ãï¼5åï¼å¦å¾10æ示ï¼æ¯å©ç¨çµå表åçµæµè¡¨æµéçµé»çå®éªè£
ç½®ã
ï¼1ï¼æå®ç©å¾è¿æ¥å®æ´ï¼è¦æ±çµæµè¡¨ãçµå表åæ¥ä½éç¨ã
ï¼2ï¼å³å¾æ¯æä¸æ¬¡æµéæ¶çµå表çæ°æ®ï¼åæ¤æ¶çµå表ç读æ°æ¯_______ï¼å¦ææ¤æ¶çµæµè¡¨ç读æ°æ¯0.16Aï¼åçµé»æ¯_______Ω.
26ã(3å)å°å为æ¢ç©¶â导ä½çµé»å¤§å°ä¸æ¸©åº¦çå
³ç³»âï¼éç¨ä¸ååå·çé
ç¬è¯è¿è¡äºå¦ä¸å®éªï¼
æ¥éª¤ä¸ï¼å°Håé
ç¬è¯æ¥å
¥çµè·¯ï¼éåå¼å
³ï¼æµé并记å½éè¿å®
ççµæµï¼
æ¥éª¤äºï¼ç¨é
ç²¾ç¯ç»é
ç¬è¯å çï¼æ¯é20sæµé并记
温馨提示:答案为网友推荐,仅供参考