ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÔÚ¡°²âÁ¿Ð¡µÆÅݵĵ繦ÂÊ¡±µÄʵÑéÖУ¬Ð¡µÆÅݵĶµçѹΪ2.5V£¬Õý³£·¢¹âʱµÄµç×èԼΪ8¦¸¡£
£¨1£©ÔÚͼ¼×ÖУ¬ÓÐÒ»¸ùµ¼ÏßδÁ¬½Ó£¬ÇëÓñʻÏß´úÌæµ¼Ïß½«µç·Á¬½ÓÍêÕû¡£
£¨______________£©
£¨2£©±ÕºÏ¿ª¹Øºó£¬Ð¡µÆÅݲ»ÁÁ£¬µçÁ÷±íÓÐʾÊý£¬µçѹ±íûÓÐʾÊý¡£¾¼ì²é£¬µ¼ÏßÁ¬½ÓÍêºÃ£¬Ôòµç·¹ÊÕÏ¿ÉÄÜÊÇСµÆÅÝ·¢ÉúÁË_______£¨Ñ¡Ìî¡°¶Ì·¡±»ò¡°¶Ï·¡±£©¡£
£¨3£©Òƶ¯»¬Æ¬Pµ½Ä³Ò»Î»ÖÃʱ£¬µçѹ±íʾÊýÈçͼÒÒËùʾ£¬Îª______V£»´ËʱҪ²âÁ¿Ð¡µÆÅݵĶ¹¦ÂÊ£¬Ó¦³Ö»¬Æ¬PÏò _________£¨Ñ¡Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©¶ËÒƶ¯£¬Òƶ¯»¬Æ¬P£¬¼Ç϶à×é¶ÔÓ¦µÄµçѹ±íºÍµçÁ÷±íµÄʾÊý£¬²¢»æÖƳÉͼ±ûËùʾµÄ I£UͼÏñ£»
£¨4£©ÓÉͼÏñ¿É¼ÆËã³öСµÆÅݵĶ¹¦ÂÊÊÇ______ W¡£
£¨5£©Íê³ÉÉÏÊö²âÁ¿ºó£¬²»Óõçѹ±í£¬ÓÃÈçÓÒͼËùʾµÄµç·Ҳ¿É²âÁ¿ÒÑÖª¶î¶¨µçÁ÷µÄСµÆÅݵĶ¹¦ÂÊ£¬ÒÑ֪СµÆÅݵĶµçÁ÷ΪI¶î£¬¶¨Öµµç×èµÄ×èֵΪR0¡£ÊµÑé²½ÖèÈçÏ£¬Çë²¹³äÍêÕû£º
¢Ù±ÕºÏ¿ª¹ØS¡¢S2£¬¶Ï¿ª¿ª¹ØS1£¬_______________________ £¬Ê¹µçÁ÷±íʾÊýΪI¶î¡£
¢Ú±ÕºÏ¿ª¹ØS¡¢S1£¬¶Ï¿ª¿ª¹ØS2£¬¼ÇÏ´ËʱµçÁ÷±íµÄʾÊýΪI£»
¢ÛСµÆÅݵĶ¹¦Âʵıí´ïʽΪP¶î=_________________ ¡£
¡¾´ð°¸¡¿¼û½âÎöËùʾ ¶Ì· 2.2 ÓÒ 0.75 »¬¶¯±ä×èÆ÷ I¶î(I -I¶î)R0
¡¾½âÎö¡¿
(1)[1]µÆÅÝÕý³£·¢¹âʱµÄµçÁ÷
I===0.3125A
ËùÒÔµçÁ÷±íÑ¡ÓÃСÁ¿³Ì£¬µçÁ÷´ÓÕý½ÓÏßÖùÁ÷È룬´Ó¸º½ÓÏßÖùÁ÷³ö£¬ÈçÏÂͼËùʾ£º
(2)[2]±ÕºÏ¿ª¹Øºó£¬µçÁ÷±íÓÐʾÊý£¬ËµÃ÷µç·ÊÇͨ·£»µçѹ±íûÓÐʾÊý£¬ËµÃ÷Óëµçѹ±í²¢ÁªµÄÓõçÆ÷Á½¶ËûÓеçѹ£¬Òò´Ëµç·¹ÊÕÏΪµÆÅݶÌ·£»
(3)[3]µçѹ±íʹÓÃ03VÁ¿³Ì£¬Ã¿Ò»¸ö´ó¸ñ´ú±í1V£¬Ã¿Ò»¸öС¸ñ´ú±í0.1V£¬µçѹ±íʾÊýΪ2.2V£»
[4]ҪʹµÆÅÝÕý³£¹¤×÷£¬µÆÅÝÁ½¶ËµçѹӦ´Ó2.2VÔö´óµ½2.5V£¬¾ÍÒª¼õС±ä×èÆ÷Á½¶ËµÄµçѹ£¬¸ù¾Ý·ÖѹÔÀí£¬»¬¶¯±ä×èÆ÷Á¬Èëµç·Öеĵç×èÒª¼õС£¬»¬Æ¬ÏòÓÒ¶ËÒƶ¯£¬Ê¹µçѹ±íµÄʾÊýΪ2.5V£»
(4)[5]´ÓͼÏó¿ÉÖª£¬µÆÅÝÔÚ2.5VϵĵçÁ÷Ϊ0.3A£¬ÔòСµÆÅݵĶ¹¦ÂÊÊÇ
P=UI=2.5V¡Á0.3A=0.75W
(5)¢Ù[6]±ÕºÏ¿ª¹ØS¡¢S2£¬¶Ï¿ª¿ª¹ØS1£¬µ÷½Ú»¬¶¯±ä×èÆ÷RµÄ»¬Æ¬P£¬Ê¹µçÁ÷±íʾÊýΪI¶î£¬´ËʱµÆÅÝÕý³£·¢¹â£»¢Ú±ÕºÏ¿ª¹ØS¡¢S1£¬¶Ï¿ª¿ª¹ØS2£¬µçÁ÷±í²âͨ¹ý¶¨Öµµç×èÓëСµÆÅݵĵçÁ÷Ö®ºÍ£¬¼Ç¼Ï´ËʱµçÁ÷±íµÄʾÊýΪI£»
¢Û[7]¶¨Öµµç×èR0µÄµçÁ÷Ϊ£º
I0=II¶î
¶¨Öµµç×èR0Á½¶ËµÄµçѹΪ£º
U=I0R0=(II¶î)R0
ÒòΪµÆÅÝÁ½¶ËµÄµçѹµÈÓÚ¶¨Öµµç×èµÄµçѹ£¬ËùÒÔµÆÅݵĶµçѹ¹¦ÂÊΪ£º
P¶î= I¶î(I -I¶î)R0¡£
¡¾ÌâÄ¿¡¿ÎªÁËÑо¿²»Í¬ÎïÖʵÄÎüÈÈÄÜÁ¦ÊÇ·ñÏàͬ£¬Ð¡ÓêºÍС·çÓÃÁËͬÑùµÄ¾Æ¾«µÆ·Ö±ð¼ÓÈÈË®ºÍúÓÍ£¬ËûÃÇËùÓõÄʵÑé×°ÖÃÈçͼËùʾ£º
(1)СÓê¸ÕÒª¿ªÊ¼×öʵÑ飬ϸÐĵÄС·çÖÊÒɵÀ£º¡°Á½¸öÉÕ±ÖеÄÒºÌåÌå»ý²»Ò»Ñù¶à£¬ÄãûÓпØÖƱäÁ¿£¡¡±£¬ÄãÈÏΪС·çµÄ˵·¨ÊÇ_____£¨Ìî¡°ÕýÈ·¡±»ò¡°²»ÕýÈ·¡±£©µÄ¡£
(2)ÔÚ´ï³ÉÒ»Öºó£¬ËûÃÇѸËÙÍê³ÉÁËʵÑ飬²¢½«²âµÃµÄÊý¾ÝÌîÈëÏÂ±í¡£ÔÚʵÑéÖУ¬Ë®ºÍúÓÍÎüÈȵĶàÉÙÊÇͨ¹ý_____À´·´Ó³µÄ£¬ÕâÖÖ·½·¨½Ð×ö_____·¨¡£
t/s | 0 | 20 | 40 | 60 | 80 | 100 | 120 | ¡ |
¡÷tË®/¡æ | 0 | 1 | 2 | 3 | 4 | 5 | 6 | ¡ |
¡÷túÓÍ/¡æ | 0 | 2 | 4 | 6 | 8 | 10 | 12 | ¡ |
(3)·ÖÎöÉϱíÊý¾Ý£ºÈç¹ûʹˮºÍúÓͶ¼Éý¸ß10¡æ£¬ËûÃÇ·¢ÏÖ¸ø_____¼ÓÈȵÄʱ¼ä³¤£¬Õâ±íÃ÷_____ÏàµÈµÄ²»Í¬ÎïÖÊÉý¸ßÏàͬζÈʱ£¬ÎüÊÕµÄÈÈÁ¿Ò»°ã_____¡£ÕýÒòΪÈç´Ë£¬ÎïÀíѧÖÐÒýÈë±ÈÈÈÈÝÕâ¸öÎïÀíÁ¿¡£
(4)ÈôÒÑ֪ˮµÄ±ÈÈÈÈÝΪ £¬Ôò¸ù¾ÝСÓêʵÑéËùµÃµÄÊý¾Ý¿ÉÖª£ºÃºÓ͵ıÈÈÈÈÝΪ_____¡£