Question

10£®ÔÚÓá°µçÁ÷±íºÍµçѹ±í²â¶¨µç³ØµÄµç¶¯ÊƺÍÄÚ×衱µÄʵÑéÖУ®ÏÖ±¸ÓÐÒÔÏÂÆ÷²Ä£º
A£®¸Éµç³Øl½Ú           B£®»¬¶¯±ä×èÆ÷£¨0¡«10¦¸£©    C£®»¬¶¯±ä×èÆ÷£¨0¡«1750¦¸£©
D£®µçѹ±í£¨0¡«3V£©     E£®µçѹ±í£¨0¡«15V£©         F£®µçÁ÷£¨0¡«0.6A£©
G£®µçÁ÷±í£¨0¡«3A£©     H£®µç¼ü¼°µ¼ÏßÈô¸É
£¨1£©ÎªÁ˼õСϵͳÎó²î£¬»¬¶¯±ä×èÆ÷ӦѡB£¬µçÁ÷±íӦѡF£¬µçѹ±íӦѡD£®
£¨2£©ÎªÁ˾¡¿ÉÄܼõСÎó²î£¬Éè¼ÆºÏÀíµÄʵÑéµç·ͼ£¨ÌîÔÚͼ1·½¿òÄÚ£©£®
£¨3£©¸ù¾ÝʵÑéÊý¾Ý»­³öµÄU-IͼÏó£¨Èçͼ2£©£®
ÓÉ´Ë¿ÉÖªÕâ¸ö¸Éµç³ØµÄµç¶¯ÊÆE=1.46V£¬ÄÚµç×èr=0.72¦¸£®²âÁ¿ÖµºÍÕæʵֵµÄ¹ØϵE_²âСÓÚE_Õ棬r_²âСÓÚr_Õ森£¨Ìî¡°´óÓÚ¡±¡¢¡°Ð¡ÓÚ¡±»ò¡°µÈÓÚ¡±£©

Answer 1

·ÖÎö £¨1£©¸ù¾ÝʵÑéÖиø³öµçÔ´¼°µçÁ÷µÄÊý¾Ý½áºÏʵÑéÔ­ÀíÃ÷È·¸÷ÒDZíµÄÑ¡Ôñ£»
£¨2£©¸ù¾ÝʵÑéÔ­ÀíÃ÷ȷʵÑéµç·µÄ½Ó·¨£»
£¨3£©ÔÚU-IͼÏóÖÐ×Ý×ø±êµÄ½Ø¾à´ú±íµÄÊǵçÔ´µÄµç¶¯ÊÆ£¬Ö±ÏßµÄбÂÊ´ú±íµÄÊǵçÔ´µÄÄÚ×èµÄ´óС£®¸ù¾Ýµç±íÄÚ×èµÄÓ°Ïì·ÖÎöʵÑéÎó²î£®

½â´ð ½â£º£¨1£©ÊµÑéÖиɵç³ØΪ1.5V£¬¹Êµçѹ±íÑ¡ÔñD¼´¿É£»ÒòµçÔ´µç¶¯ÊƽÏС£¬µç·ÖеçÁ÷½ÏС£»¹ÊµçÁ÷±íÑ¡ÔñF£»ÎªÁ˱ãÓÚµ÷½Ú£¬»¬¶¯±ä×èÆ÷Ñ¡ÔñСµç×èB£»
£¨2£©ÊµÑéÖвÉÓû¬¶¯±ä×èÆ÷ÓëµçÔ´´®Áª¼´¿É£¬Òòµç³ØÄÚ×è½ÏС£¬¹Ê²ÉÓÃÏà¶ÔµçÔ´µÄÍâ½Ó·¨£»µç·ͼÈçͼËùʾ£»
£¨3£©ÔÚU-IͼÏóÖÐͼÏóÓë×Ý×ø±êµÄ½»µãµÈÓÚµçÔ´µÄµç¶¯ÊÆ£¬ËùÒÔÓÉͼ¿ÉÒÔ¶Á³öµçÔ´µÄµç¶¯ÊÆΪ1.46V£¬
ͼÏóÖеÄбÂʱíʾµçÔ´µÄÄÚ×裬ËùÒÔµçÔ´µÄÄÚ×èΪ£ºr=$\frac{1.46-1.00}{0.65}$¦¸=0.72¦¸£®
¿¼Âǵçѹ±íµÄÄÚ×裬¸ù¾ÝʵÑéµÄÔ­ÀíÓУºE=U+£¨$\frac{U}{{R}_{0}+R}$+$\frac{U}{{R}_{V}}$£©r
$\frac{1}{U}$=$\frac{1}{E}$£¨1+$\frac{r}{{R}_{V}}$£©+$\frac{r}{E}$•$\frac{1}{{R}_{0}}$•$\frac{1}{{R}_{0}+R}$£¬¿¼Âǵçѹ±íµÄÄÚ×裬´ËʱͼÏßµÄ×ÝÖá½Ø¾à±íʾ$\frac{1}{E}$£¨1+$\frac{r}{{R}_{V}}$£©£¬
ËùÒÔE_²âСÓÚE_Õ棬r_²âСÓÚr_Õ森
¹Ê´ð°¸Îª£º£¨1£©B£¬F£¬D£»£¨2£©1.46£¬0.72£¬Ð¡ÓÚ£¬Ð¡ÓÚ

µãÆÀ ±¾Ì⿼²éÁË×÷ͼÏó¡¢ÇóµçÔ´µç¶¯ÊÆÓëÄÚ×裬ӦÓÃͼÏó·¨´¦ÀíʵÑéÊý¾ÝÊdz£ÓõÄʵÑéÊý¾Ý´¦Àí·½·¨£¬µçÔ´U-IͼÏóÓë×ÝÖá½»µã×ø±êÖµÊǵçÔ´µç¶¯ÊÆ£¬Í¼ÏóбÂʵľø¶ÔÖµµÈÓÚµçÔ´ÄÚ×裮