ÌâÄ¿ÄÚÈÝ
(12·Ö)ÓÐÁ½×éͬѧ½øÐÐÁËÈçÏÂʵÑ飺
¡¡¡¡(1)¼××éͬѧÆ÷²ÄÓУºµçÔ´£¬»¬¶¯±ä×èÆ÷£¬µçÁ÷±íA1(0£200mA£¬ÄÚ×èÔ¼11¦¸)£¬µçÁ÷±íA(0£300mA£¬ÄÚ×èÔ¼8¦¸£¬¶¨Öµµç×èR1=24¦¸£¬R2=12¦¸£¬¿ª¹ØÒ»¸ö£¬µ¼ÏßÈô¸É¡£ÎªÁ˲âÁ¿A1µÄÄÚ×裬¸Ã×éͬѧ¹²Éè¼ÆÁËÏÂͼÖÐA¡¢B¡¢C¡¢DËÄÌ×·½°¸£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412042089120077.gif)
¡¡¡¡ÆäÖÐ×î¼ÑµÄ·½°¸ÊÇ___________Ì×£¬ÈôÓô˷½°¸²âµÃA1¡¢A2ʾÊý·Ö±ðΪ180 mAºÍ270mA£¬ÔòA1µÄÄÚ×èΪ___________¦¸¡£
¡¡¡¡![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241204209225804.gif)
(2)ÒÒ×éͬѧ½«¼××éͬѧµÄµçÁ÷±íA1ÄùýÀ´£¬ÔÙ¼ÓÉϵç×èÏäR(×î´ó×èÖµ9.9¦¸)£¬¶¨Öµµç×èR0=6.0¦¸£¬Ò»¸ö¿ª¹ØºÍÈô¸Éµ¼ÏßÓÃÀ´²âÁ¿Ò»¸öµçÔ´(µç¶¯ÊÆEԼΪ6.2V£¬ÄÚ×èrԼΪ2.1¦¸)µÄµç¶¯ÊƼ°ÄÚ×è¡£ÇëÔÚ·½¿òÖл³öÉè¼Æµç·ͼ¡£
¡¡¡¡Èô¼Ç¼ʵÑéÖеç×èÏäµÄ×èÖµRºÍ¶ÔÓ¦µÄA1ʾÊýµÄµ¹Êý
£¬µÃµ½¶à×éÊý¾ÝºóÃèµã×÷³öR£
ͼÏßÈçͼËùʾ£¬Ôò¸ÃµçÔ´µÄµç¶¯ÊÆE=___________V£¬ÄÚ×èr=___________¦¸¡£(½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö)
¡¡¡¡(1)¼××éͬѧÆ÷²ÄÓУºµçÔ´£¬»¬¶¯±ä×èÆ÷£¬µçÁ÷±íA1(0£200mA£¬ÄÚ×èÔ¼11¦¸)£¬µçÁ÷±íA(0£300mA£¬ÄÚ×èÔ¼8¦¸£¬¶¨Öµµç×èR1=24¦¸£¬R2=12¦¸£¬¿ª¹ØÒ»¸ö£¬µ¼ÏßÈô¸É¡£ÎªÁ˲âÁ¿A1µÄÄÚ×裬¸Ã×éͬѧ¹²Éè¼ÆÁËÏÂͼÖÐA¡¢B¡¢C¡¢DËÄÌ×·½°¸£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412042089120077.gif)
¡¡¡¡ÆäÖÐ×î¼ÑµÄ·½°¸ÊÇ___________Ì×£¬ÈôÓô˷½°¸²âµÃA1¡¢A2ʾÊý·Ö±ðΪ180 mAºÍ270mA£¬ÔòA1µÄÄÚ×èΪ___________¦¸¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241204209075012.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241204209225804.gif)
(2)ÒÒ×éͬѧ½«¼××éͬѧµÄµçÁ÷±íA1ÄùýÀ´£¬ÔÙ¼ÓÉϵç×èÏäR(×î´ó×èÖµ9.9¦¸)£¬¶¨Öµµç×èR0=6.0¦¸£¬Ò»¸ö¿ª¹ØºÍÈô¸Éµ¼ÏßÓÃÀ´²âÁ¿Ò»¸öµçÔ´(µç¶¯ÊÆEԼΪ6.2V£¬ÄÚ×èrԼΪ2.1¦¸)µÄµç¶¯ÊƼ°ÄÚ×è¡£ÇëÔÚ·½¿òÖл³öÉè¼Æµç·ͼ¡£
¡¡¡¡Èô¼Ç¼ʵÑéÖеç×èÏäµÄ×èÖµRºÍ¶ÔÓ¦µÄA1ʾÊýµÄµ¹Êý
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120420938945.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120420938945.gif)
23£®(1)D(2·Ö)¡¡¡¡¡¡12(2·Ö)£»
¡¡¡¡(2)µç·ÈçͼËùʾ(4·Ö)¡¡¡¡¡¡6.0(2·Ö)¡¡¡¡¡¡2.0(2·Ö)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412042096915011.gif)
¡¡¡¡(2)µç·ÈçͼËùʾ(4·Ö)¡¡¡¡¡¡6.0(2·Ö)¡¡¡¡¡¡2.0(2·Ö)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412042096915011.gif)
(1)ÓÉÓÚÏÖ³¡µçÁ÷±íÄÚ×è¾ùδ֪£¬²ÉÓÃÖ±½Ó²¢ÁªµÄ·½·¨²»ÄܲâµçÁ÷±íÁ½¶Ëµçѹ£¬¼´²»Í¨²âµçÁ÷±íÄÚ×裬ABÁ½Í¼¾ù´í£»ÈôA1Óë
²¢Áª£¬ÔòÆäÁ¿³ÌÀ©´ó½ü1±¶£¬Á½±íʾÊýÏà²î½Ï´ó£¬¹Ê²ÉÓÃͼD£»ÇÒ
£¬½âµÃµçÁ÷±íA1µÄÄÚ×è
£»
(2)ÒªÇóÊôÒ»±íÒ»Ïä²âµçÔ´µç¶¯ÊƺÍÄÚ×裬Òò´Ëµç×èÏäÓ¦ÓëµçÁ÷±í´®Áª£¬µ«ÓÉÓÚµçÁ÷±íÁ¿³Ì0.2AСÓڻط×îСµçÁ÷
£¬¹ÊµçÁ÷±íÁ¿³ÌÐëÀ©´ó£¬¶ø
£¬ÓëµçÁ÷±íA1²¢Áª¸Ä×°ÓëÁ¿³ÌΪ0.6AµçÁ÷±í£¬ÄÜÂú×ãÁ¿³ÌÒªÇó£®Óɱպϵç·ŷķ¶¨ÂɵÃ
£¬ÆäÖÐ
Ϊ»Ø·×ܵçÁ÷£¬ÊǵçÁ÷±íʾÊýµÄ3±¶£¬¼´µçÔ´µç¶¯ÊÆ
£¬µçÔ´ÄÚ×è
£®
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120420985220.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421000658.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421000308.gif)
(2)ÒªÇóÊôÒ»±íÒ»Ïä²âµçÔ´µç¶¯ÊƺÍÄÚ×裬Òò´Ëµç×èÏäÓ¦ÓëµçÁ÷±í´®Áª£¬µ«ÓÉÓÚµçÁ÷±íÁ¿³Ì0.2AСÓڻط×îСµçÁ÷
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421016670.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421031537.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421047594.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421063201.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421078698.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120421094494.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿