ÌâÄ¿ÄÚÈÝ
ÓÐÈçÏÂÆ÷²Ä£¬ÇëÑ¡ÓúÏÊʵÄÆ÷²ÄÍê³É¡°²âµç³Ø×éµÄµç¶¯ÊƺÍÄÚµç×衱ʵÑ飮
A¡¢µçѹ±íV1 £¨Á¿³Ì15V£¬ÄÚ×èÔ¼15k¦¸£©
B¡¢µçѹ±íV2£¨Á¿³Ì3V£¬ÄÚ×èÔ¼5k¦¸£©
C¡¢µçѹ±íV3£¨Á¿³Ì3V£¬ÄÚ×èÔ¼1k¦¸£©
D¡¢µçÁ÷±íA1£¨Á¿³Ì50mA£¬ÄÚ×èÔ¼20¦¸£©
E¡¢µçÁ÷±íA2£¨Á¿³Ì600mA£¬ÄÚ×èÔ¼2¦¸£©
F¡¢»¬¶¯±ä×èÆ÷£¨10¦¸£¬2A£©
G¡¢»¬¶¯±ä×èÆ÷£¨2000¦¸£¬1A£©
H¡¢´ý²âµç³Ø×é
I¡¢¿ª¹Ø¡¢µ¼ÏßÈô¸É
¢ÙΪ±ãÓÚµ÷½Ú²âÁ¿²¢Ê¹½á¹û¾¡Á¿×¼È·£¬³ýÑ¡ÔñÆ÷²ÄH¡¢IÒÔÍ⣬µçѹ±íӦѡ______£»µçÁ÷±íӦѡ______£»»¬¶¯±ä×èÆ÷Ӧѡ______£®£¨ÌîÆ÷²ÄÇ°µÄ×Öĸ´úºÅ£©
¢ÚijͬѧѡÔñÁ˺ÏÊÊÆ÷²Ä£¬Éè¼ÆÁËÕýÈ·ºÏÀíµÄʵÑéµç·£¬ËûÒÀ¾Ý²âµÃµÄÊý¾Ý»³öU-IͼÏó£¬ÈçͼËùʾ£®¸ù¾ÝͼÏóµÃ³öµç³Ø×éµÄµç¶¯ÊÆE=______£¬µç³Ø×éµÄÄÚµç×èr=______£¨ÒÔÉÏÁ½¿ÕÒªÇóÁ½Î»ÓÐЧÊý×Ö£©£®
¢ÛÇë¸ù¾ÝÕýÈ·µÄÉè¼ÆÔÀí½«ÊµÎïͼ»ÏßÁ¬³ÉʵÑéµç·£®
A¡¢µçѹ±íV1 £¨Á¿³Ì15V£¬ÄÚ×èÔ¼15k¦¸£©
B¡¢µçѹ±íV2£¨Á¿³Ì3V£¬ÄÚ×èÔ¼5k¦¸£©
C¡¢µçѹ±íV3£¨Á¿³Ì3V£¬ÄÚ×èÔ¼1k¦¸£©
D¡¢µçÁ÷±íA1£¨Á¿³Ì50mA£¬ÄÚ×èÔ¼20¦¸£©
E¡¢µçÁ÷±íA2£¨Á¿³Ì600mA£¬ÄÚ×èÔ¼2¦¸£©
F¡¢»¬¶¯±ä×èÆ÷£¨10¦¸£¬2A£©
G¡¢»¬¶¯±ä×èÆ÷£¨2000¦¸£¬1A£©
H¡¢´ý²âµç³Ø×é
I¡¢¿ª¹Ø¡¢µ¼ÏßÈô¸É
¢ÙΪ±ãÓÚµ÷½Ú²âÁ¿²¢Ê¹½á¹û¾¡Á¿×¼È·£¬³ýÑ¡ÔñÆ÷²ÄH¡¢IÒÔÍ⣬µçѹ±íӦѡ______£»µçÁ÷±íӦѡ______£»»¬¶¯±ä×èÆ÷Ӧѡ______£®£¨ÌîÆ÷²ÄÇ°µÄ×Öĸ´úºÅ£©
¢ÚijͬѧѡÔñÁ˺ÏÊÊÆ÷²Ä£¬Éè¼ÆÁËÕýÈ·ºÏÀíµÄʵÑéµç·£¬ËûÒÀ¾Ý²âµÃµÄÊý¾Ý»³öU-IͼÏó£¬ÈçͼËùʾ£®¸ù¾ÝͼÏóµÃ³öµç³Ø×éµÄµç¶¯ÊÆE=______£¬µç³Ø×éµÄÄÚµç×èr=______£¨ÒÔÉÏÁ½¿ÕÒªÇóÁ½Î»ÓÐЧÊý×Ö£©£®
¢ÛÇë¸ù¾ÝÕýÈ·µÄÉè¼ÆÔÀí½«ÊµÎïͼ»ÏßÁ¬³ÉʵÑéµç·£®
¢ÙÓÉͼÏóÉϵIJâÁ¿Êý¾ÝÖªµçÔ´µç¶¯ÊÆΪ2.1V£¬Ôòµçѹ±íÑ¡Á¿³ÌΪ3VµÄB¼´¿É£»
µçÁ÷×î´óֵΪ0.6A£¬¹ÊµçÁ÷±íÑ¡E£»
Ϊ·½±ãʵÑé²Ù×÷£¬Ñ¡×î´ó×èÖµ½ÏСµÄ»¬¶¯±ä×èÆ÷F¼´¿É£»
¢ÚU-IͼÏóÉÏ£¬×ÝÖá½Ø¾àµÈÓÚµçÔ´µç¶¯ÊÆ£¬¹ÊE=2.1V£»
ͼÏßµÄбÂʵÈÓÚÄÚ×裺r=
=
=4.0¦¸£»
¢ÛµçÔ´µÄÄÚ×è½ÏС£¬ÊôÓÚСµç×裬²ÉÓõçÁ÷±íÍâ½Ó·¨£®ÊµÎïͼÈçÏ£º
¹Ê´ð°¸Îª£º¢ÙB£»E£»F£®
¢Ú2.9£¬4.0£®
¢ÛÈçͼ£®
µçÁ÷×î´óֵΪ0.6A£¬¹ÊµçÁ÷±íÑ¡E£»
Ϊ·½±ãʵÑé²Ù×÷£¬Ñ¡×î´ó×èÖµ½ÏСµÄ»¬¶¯±ä×èÆ÷F¼´¿É£»
¢ÚU-IͼÏóÉÏ£¬×ÝÖá½Ø¾àµÈÓÚµçÔ´µç¶¯ÊÆ£¬¹ÊE=2.1V£»
ͼÏßµÄбÂʵÈÓÚÄÚ×裺r=
¡÷U |
¡÷I |
2.1-0.5 |
0.6-0.2 |
¢ÛµçÔ´µÄÄÚ×è½ÏС£¬ÊôÓÚСµç×裬²ÉÓõçÁ÷±íÍâ½Ó·¨£®ÊµÎïͼÈçÏ£º
¹Ê´ð°¸Îª£º¢ÙB£»E£»F£®
¢Ú2.9£¬4.0£®
¢ÛÈçͼ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿