ÌâÄ¿ÄÚÈÝ
2£®Ä³ÊµÑéС×é°ÑÂúÆ«µçÁ÷Ig=2.00mAµÄµçÁ÷±í¸Ä×°³ÉÁ¿³ÌΪ2VµÄµçѹ±í£¬ÔÙÓô˵çѹ±í²âµçÔ´µÄµç¶¯ÊƺÍÄÚµç×裮¾ßÌå×ö·¨ÈçÏ£º£¨1£©¸Ä×°µçѹ±íµÄµç·ÈçͼaËùʾ£¬ÆäÖÐΪҪ¸Ä×°µÄºÁ°²±í£¬VÊÇÁ¿³ÌΪ2VµÄ±ê×¼µçѹ±í£¬R1Ϊ»¬¶¯±ä×èÆ÷£¬R2Ϊµç×èÏ䣬S1¡¢S2Ϊ¿ª¹Ø£¬EΪÁ½½Ú¸Éµç³Ø´®³ÉµÄµçÔ´£®ÇëÍêÉÆÏÂÁÐʵÑé²½Ö裺
¢Ù½«»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·µ÷ÖÁ×ó¶Ë£¨Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©£¬µç×èÏäR2µÄ×èÖµµ÷ÖÁ×î´ó£»
¢Ú¶Ï¿ª¿ª¹ØS2£¬±ÕºÏ¿ª¹ØS1£»
¢Ûµ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·£¬Ê¹±ê×¼µçѹ±íµÄ¶ÁÊýΪ2.0V£»
¢Ü±ÕºÏ¿ª¹ØS2µ÷½Úµç×èÏäR2µÄ×èÖµ£¬Ê¹ºÁ°²±íÖ¸Õë½Ó½üÂúÆ«£¬´Ëʱ±ê×¼µçѹ±íµÄ¶ÁÊý»á¼õС£¨Ìî¡°Ôö´ó¡±¡¢¡°¼õС¡±»ò¡°²»±ä¡±£©£»
¢Ý¶à´ÎÖظ´²½Öè¢Û¢Ü£¬Ö±ÖÁ±ê×¼µçѹ±íµÄ¶ÁÊýΪ2.0V£¬Í¬Ê±ºÁ°²±íÖ¸ÕëÂúÆ«£®
£¨2£©Í¼bΪ²âµçÔ´µç¶¯ÊƺÍÄÚ×èµÄµç·ͼ£¬´ý²âµçÔ´E¡äµÄµç¶¯ÊÆԼΪ2.0V£¬R0Ϊ1.0Å·Ä·µÄ±£»¤µç×裮±ÕºÏ¿ª¹ØS£¬µ÷Õûµç×èÏäRµÄ×èÖµ£¬¶ÁÈ¡ºÁ°²±íµÄʾÊý£¬¶à´Î¸Ä±äµç×èÏäRµÄ×èÖµ£¬µÃµ½¶à×éÊý¾Ý£¨Èç±í£©£¬¸ù¾Ý±íÖеÄÊý¾ÝÔÚËù¸øµÄ×ø±êϵÖÐ×÷³öͼÏó£¬ÓÉͼÏó¿ÉÖªµçÔ´µÄµç¶¯ÊÆE¡äΪ2V£¬r¡äΪ1¦¸£®
Íâµç×è$\frac{1}{R}$£¨¦¸-1£© | µçÁ÷$\frac{1}{I}$£¨mA-1£© |
1.00 | 1.50 |
0.50 | 1.00 |
0.25 | 0.75 |
0.17 | 0.67 |
0.13 | 0.62 |
·ÖÎö £¨1£©»¬¶¯±ä×èÆ÷²ÉÓ÷Öѹ½Ó·¨£¬Îª±£»¤µç·°²È«£¬±ÕºÏ¿ª¹ØÇ°»¬Æ¬ÒªÖÃÓÚ·Öѹµç··ÖѹΪÁãµÄλÖ㻸ù¾Ý´®²¢Áªµç·ÌصãÓëÅ·Ä·¶¨Âɷֶȵçѹ±íʾÊýÈçºÎ±ä»¯£»
£¨2£©Ó¦ÓÃÃèµã·¨×÷³öͼÏ󣻸ù¾Ýͼʾµç·ͼ£¬Ó¦ÓÃÅ·Ä·¶¨ÂÉÇó³öͼÏóµÄº¯Êý±í´ïʽ£¬È»ºó¸ù¾Ýº¯Êý±í´ïʽÇó³öµçÔ´µç¶¯ÊÆÓëÄÚ×裮
½â´ð ½â£º£¨1£©¢ÙÓÉͼʾµç·ͼ¿ÉÖª£¬»¬¶¯±ä×èÆ÷²ÉÓ÷Öѹ½Ó·¨£¬Îª±£»¤µç·°²È«£¬Ó¦½«»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·µ÷ÖÁ×ó¶Ë£¬µç×èÏäR2µÄ×èÖµµ÷ÖÁ×î´ó£»
¢Ü±ÕºÏ¿ª¹ØS2µ÷½Úµç×èÏäR2µÄ×èÖµ£¬µç×èÏäÓëµçѹ±í²¢Áª£¬µç·×ܵç×èµç×è±äС£¬¸É·µçÁ÷±ä´ó£¬µçѹ±í²¢Áª²¿·Öµç··Öѹ±äС£¬´Ëʱ±ê×¼µçѹ±íµÄ¶ÁÊý»á¼õС£»
¢Ý¶à´ÎÖظ´²½Öè¢Û¢Ü£¬Ö±ÖÁ±ê×¼µçѹ±íµÄ¶ÁÊýΪ2.0V£¬Í¬Ê±ºÁ°²±íÖ¸ÕëÂúÆ«£®
£¨2£©¸ù¾Ý±íÖÐʵÑéÊý¾ÝÔÚ×ø±êϵÄÚÃè³ö¶ÔÓ¦µã£¬È»ºó×÷³öͼÏóÈçͼËùʾ£º
2mAµÄµçÁ÷±í¸Ä×°³É2VµÄµçѹ±í£¬µçѹ±íÄÚ×èΪ£º$\frac{2V}{0.002A}$=1000¦¸£¬µçѹ±íʾÊý£ºU=1000¡Á0.001I=I£¬
ÓÉͼbËùʾµç·ͼ¿ÉÖª£¬µçÔ´µç¶¯ÊÆ£ºE=U+$\frac{U}{R}$£¨r+R0£©£¬Ôò£º$\frac{1}{U}$=$\frac{1}{E}$+$\frac{1}{R}$$\frac{r+{R}_{0}}{E}$£¬
ÒÑÖª£ºU=I£¬Ôò£º$\frac{1}{I}$=$\frac{1}{E}$+$\frac{1}{R}$$\frac{r+{R}_{0}}{E}$£¬
ÓÉͼʾͼֽ¿ÉÖª£ºb=0.5=$\frac{1}{E}$£¬½âµÃ£ºE=2V£¬k=$\frac{¡÷\frac{1}{I}}{¡÷\frac{1}{R}}$=$\frac{1.5-0.5}{1}$=1=$\frac{r+{R}_{0}}{E}$£¬r=kE-R0=1¡Á2-1=1¦¸£»
¹Ê´ð°¸Îª£º£¨1£©¢Ù×󣻢ܼõС£»¢Ý2.0V£»£¨2£©2£»1£®
µãÆÀ ±¾Ì⿼²éÁËʵÑé×¢ÒâÊÂÏî¡¢ÇóµçÔ´µç¶¯ÊÆÓëÄÚ×裬ӦÓñպϵç·ŷķ¶¨ÂÉÇó³öͼÏóµÄº¯Êý±í´ïʽ£¬È»ºó¸ù¾ÝͼÏóÓ뺯Êý±í´ïʽ¿ÉÒÔÇó³öµçÔ´µç¶¯ÊÆÓëÄÚ×裬ҪÕÆÎÕͼÏó·¨´¦ÀíʵÑéÊý¾ÝµÄ·½·¨£®
A£® | ÖʵãPµÄÏßËٶȴóС²»±ä | B£® | ÖʵãPµÄ½ÇËٶȴóС²»±ä | ||
C£® | ÖʵãQµÄÏßËٶȴóС²»±ä | D£® | ÖʵãQµÄ½ÇËٶȴóС²»±ä |
A£® | ÈôÖ»Ôö´óm£¬ÔòÀÁ¦F×ö¹¦²»±ä | B£® | ÈôÖ»Ôö´óm£¬Ôò³¤Ä¾°åÄ©¶¯ÄÜÔö´ó | ||
C£® | ÈôÖ»Ôö´óM£¬ÔòСľ¿éÄ©¶¯ÄÜÔö´ó | D£® | ÈôÖ»Ôö´óF£¬Ôò³¤Ä¾°åÄ©¶¯Äܲ»±ä |
A£® | ¸ÃÐÐÐǵĵÚÒ»ÓîÖæËÙ¶ÈÊǵØÇòµÄµÚÒ»ÓîÖæËÙ¶È2±¶ | |
B£® | Èç¹ûÈ˵½Á˸ÃÐÐÐÇ£¬ÆäÌåÖØ£¨ÖØÁ¦£©ÊǵØÇòÉϵÄ2$\frac{2}{3}$±¶ | |
C£® | ¸ÃÐÐÐÇÓë¡°Gliese581¡±µÄ¾àÀëÊÇÈյؾàÀëµÄ$\sqrt{\frac{13}{365}}$±¶ | |
D£® | ÐÐÐÇ¡°G1581c¡±ÈƺãÐÇ¡°Gliese581¡±Ô˶¯¹ìµÀ°ë¾¶µÄÈý´Î·½ÓëÖÜÆÚƽ·½Ö®±ÈµÈÓÚµØÇòÈÆÌ«ÑôÔ˶¯°ë¾¶µÄÈý´Î·½ÓëÖÜÆÚƽ·½Ö®±È |
A£® | ´«¸ÐÆ÷Äܽ«¸ÐÊܵ½µÄÍⲿÐÅÏ¢°´ÕÕÒ»¶¨µÄ¹æÂÉת»»ÎªµçÐźŠ| |
B£® | ´«¸ÐÆ÷ÔÚÈÕ³£Éú»îÖв¢²»³£¼û | |
C£® | ¹âÃôµç×èÊÇÒ»ÖÖÀûÓùâÃôÔª¼þ½«¹âÐźÅת»¯ÎªµçÐźŵĴ«¸ÐÆ÷ | |
D£® | ÈÈÃôµç×èÊǽ«Î¶ȵı仯ת»¯ÎªµçÐźŵĴ«¸ÐÆ÷ |
A£® | Ô˶¯ÎïÌåËùÊܵĺÏÁ¦²»ÎªÁ㣬ºÏÁ¦±Ø×ö¹¦£¬ÔòÎïÌåµÄ¶¯ÄÜÒ»¶¨Òª±ä»¯ | |
B£® | Ô˶¯ÎïÌåËùÊܵĺÏÁ¦ÎªÁ㣬ÎïÌåµÄ¶¯ÄÜÒ»¶¨²»±ä | |
C£® | Ô˶¯ÎïÌåµÄ¶¯Äܱ£³Ö²»±ä£¬Ôò¸ÃÎïÌåËùÊܺÏÁ¦Ò»¶¨ÎªÁã | |
D£® | Ô˶¯ÎïÌåËùÊܺÏÁ¦²»ÎªÁ㣬Ôò¸ÃÎïÌå¿ÉÄÜ×öÔÈËÙÔ˶¯ |
A£® | ¶ÔÐÇÇòÖ®¼ä¶øÑÔ£¬ÊÇÖ¸ÔËÐйìµÀµÄƽ¾ù°ë¾¶ | |
B£® | ¶ÔµØÇò±íÃæµÄÎïÌåÓëµØÇò¶øÑÔ£¬ÊÇÖ¸ÎïÌå¾àÀëµØÃæµÄ¸ß¶È | |
C£® | ¶ÔÁ½¸ö¾ùÔÈÇò¶øÑÔ£¬ÊÇÖ¸Á½¸öÇòÐļäµÄ¾àÀë | |
D£® | ¶Ô·É»ú·ÉÐжøÑÔ£¬ÊÇÖ¸ÎÀÐǵ½µØÇò±íÃæµÄ¸ß¶È |