ijͬѧΪÑо¿ÈÈÃôµç×裨µç×èÖµËæζȵĸıä¶ø¸Ä±ä£¬ÇÒ¶ÔζȺÜÃô¸Ð£©µÄI-U¹Øϵ£¬Éè¼ÆÁËÈçͼ¼×ËùʾµÄµç·ͼ£¬°´Õոõç·ͼÁ¬½ÓʵÑéÆ÷²Äºó£¬¶ÔÁ½¸ö²»Í¬µÄÈÈÃôµç×èRA¡¢RB·Ö±ð½øÐÐÁ˲âÁ¿£¬µÃµ½ÁËÁ½¸öÈÈÃôµç×èµÄI-U¹ØϵÇúÏߣ¬ÈçͼÒÒËùʾ¡£
£¨1£©ÔÚʵÑéÖУ¬ÓÐÒÔÏÂÆ÷²Ä¹©Ñ¡Ôñ£ºA£®Á¿³ÌΪ100mAµÄµçÁ÷±í£¬B£®Á¿³ÌΪ0.6AµÄµçÁ÷±í£¬C£®Á¿³ÌΪ3VµÄµçѹ±í£¬D£®Á¿³ÌΪ15VµÄµçѹ±í£¬E£®±ä×èÆ÷£¨×î´óµç×è100¦¸£¬¶î¶¨µçÁ÷0.2A£©£¬F£®±ä×èÆ÷£¨×î´óµç×è50¦¸£¬¶î¶¨µçÁ÷0.02A£©£¬G£®µç¶¯ÊÆΪ9 V¡¢ÄÚ×è²»¼ÆµÄÖ±Á÷µçÔ´£¬H£®µç¼üÓëµ¼Ïß¡£ÎªÁ˵õ½ÈçͼÒÒËùʾµÄÍêÕûÇúÏߣ¬ÇëÑ¡ÔñºÏÊʵÄʵÑéÆ÷²Ä×é³ÉÈçͼ¼×Ëùʾµç·£º______________£¨ÌîÆ÷²ÄÇ°µÄ×Öĸ£©¡£
£¨2£©°ÑÈÈÃôµç×èRA½Óµ½Â·¶ËµçѹΪ3 VµÄµçÔ´ÉÏ£¬´ËʱRAµÄ×èֵΪ________¦¸¡£
£¨3£©¸ÃͬѧÓÖ½«RA¡¢RB¡¢¶¨Öµµç×èR0£½250 ¦¸ÓëµçѹºãΪ9 VµÄÖ±Á÷µçÔ´Á¬½Ó£¬×é³ÉÈçͼ±ûËùʾµç·£¬Ôò´Ëµç·ÖеçÁ÷Ϊ_______mA¡£
£¨1£©ADEGH£¨3·Ö£¬µçÁ÷±í¡¢µçѹ±í»ò»¬¶¯±ä×èÆ÷Ñ¡Ôñ´íÎó¡¢Â©Ñ¡£¬Ã¿¸ö¿Û1·Ö£¬ÈôGHûÓÐÑ¡Ôñ¹²¿Û1·Ö£¬×î¶à¿Û3·Ö£©£¨2£©130£¨¡À10£©£¨2·Ö£©£¨3£©14£¨¡À1£©£¨2·Ö£©£¬
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ijͬѧÔÚÑо¿ÈÈÃôµç×èµÄζÈÌØÐÔʱ£¬ÔÚ²»Í¬Î¶ÈϲâÁ¿Ò»¸öÈÈÃôµç×èµÄ×èÖµ£¬²¢¸ù¾Ý²âÁ¿½á¹ûÃæ³öÁËÈÈÃôµç×èµÄ×èÖµRËæζÈt±ä»¯µÄͼÏó£¬ÈçͼËùʾ£®ÓÉ´Ë¿ÉÖª£ºµ±Î¶ÈΪt1ʱ£¬Õâ¸öÈÈÃôµç×èµÄ×èֵΪ
R1
R1
£»µ±Î¶ȴÓt1Éý¸ßµ½t2µÄ¹ý³ÌÖУ¬Ëæ×ÅζȵÄÉý¸ß£¬Õâ¸öÈÈÃôµç×èµÄ×èÖµ
¼õС
¼õС
£¨Ñ¡Ìî¡°Ôö´ó¡±¡¢¡°¼õС¡±»ò¡°²»±ä¡±£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2011?ÄÏÏØÄ£Ä⣩¢ñ¡¢Ä³ÊµÑéС×éÀûÓÃÈçͼ¼×ËùʾµÄʵÑé×°ÖÃÀ´ÑéÖ¤¹³ÂëºÍ»¬¿éËù×é³ÉµÄϵͳ»úеÄÜÊغ㣮

¢ÙÈçͼÒÒËùʾ£¬ÓÃÓα꿨³ß²âµÃÕÚ¹âÌõµÄ¿í¶Èd=
5.2
5.2
mm£»ÊµÑéʱ½«»¬¿é´ÓͼʾλÖÃÓɾ²Ö¹ÊÍ·Å£¬ÓÉÊý×Ö¼ÆʱÆ÷¶Á³öÕÚ¹âÌõͨ¹ý¹âµçÃŵÄʱ¼ä¡÷t=1.2¡Á10-2s£¬Ôò»¬¿é¾­¹ý¹âµçÃÅʱµÄ˲ʱËÙ¶È
0.43
0.43
m/s£®ÔÚ±¾´ÎʵÑéÖл¹ÐèÒª²âÁ¿µÄÎïÀíÁ¿ÓУº¹³ÂëµÄÖÊÁ¿m¡¢
»¬¿éÉϵÄÕÚ¹âÌõ³õʼλÖõ½¹âµçÃŵľàÀës
»¬¿éÉϵÄÕÚ¹âÌõ³õʼλÖõ½¹âµçÃŵľàÀës
ºÍ
»¬¿éµÄÖÊÁ¿M
»¬¿éµÄÖÊÁ¿M
£¨ÎÄ×Ö˵Ã÷²¢ÓÃÏàÓ¦µÄ×Öĸ±íʾ£©£®

¢Ú±¾ÊµÑéͨ¹ý±È½Ï
mgs
mgs
 ºÍ
1
2
(m+M)(
d
¡÷t
)
2
1
2
(m+M)(
d
¡÷t
)
2
ÔÚʵÑéÎó²îÔÊÐíµÄ·¶Î§ÄÚÏàµÈ£¨ÓòâÁ¿µÄÎïÀíÁ¿·ûºÅ±íʾ£©£¬´Ó¶øÑéÖ¤ÁËϵͳµÄ»úеÄÜÊغ㣮
¢ò¡¢ÀîÑôͬѧҪ°ïÂèÂèÖÆ×÷Ò»¸ö×Ô¶¯¿Øηõ»¯Æ÷£¬Ëûµ½µç×ÓÉ̳ÇÂòÁËÒ»Ö»±ê³ÆֵΪ220¦¸µÄ°ëµ¼ÌåÈÈÃôµç×裬ÓÉÓÚ²»ÖªµÀ¸Ãµç×èµÄζÈÌØÐÔ£¬Îª´Ë£¬Ëû×öÁËÈçÏÂʵÑ飮
£¨1£©ÔÚÊÒÎÂÏ£¨Ô¼20¡æ£©ËûÕýȷʹÓöàÓñíµÄÅ·Ä·µ²²â¸ÃÈÈÃôµç×èµÄ×èֵʱ£¬±íµÄʾÊýÈçͼ¼×Ëùʾ£¬¿ÉÅж¨ÀîÑôͬѧ²âÁ¿Ê±Ñ¡ÓõÄÊÇ
¡Á10
¡Á10
µ²£¬²âµÃÈÈÃôµç×èµÄ×èÖµÊÇ
260
260
¦¸£®
£¨2£©ÀîÑôͬѧҪͨ¹ý¸Ä±äÈÈÃôµç×èµÄζȲ¢Ó÷ü°²·¨²âÈÈÃôµç×èµÄ×èÖµÀ´Ñо¿ÈÈÃôµç×èµÄζÈÌØÐÔ£¬Ëû×¼±¸ÁËÈçÏÂÆ÷²Ä£º
¢ÙÐîµç³Ø£¨µç¶¯ÊÆΪ6V£¬ÄÚ×è²»¼Æ£©¼°µç¼ü
¢Ú·üÌØ±í£¨Á¿³ÌΪ0¡«6V£¬ÄÚ×èºÜ´ó£©
¢Û°²Åà±í£¨Á¿³ÌΪ0¡«20mA£¬ÄÚ×èRg=10¦¸£©
¢Ü¶¨Öµµç×èR0£¨R0=5¦¸£©
ͼÒÒÖиø³öËĸöµç·£¬ÆäÖкÏÀíµÄÊÇ
D
D
£®

£¨3£©ÀîÑôͬѧµÃµ½µÄʵÑéÊý¾ÝÈçÏÂ±í£º
t/¡æ 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0
R/¦¸ 330 275 230 202 170 144 120 103
ͼ±ûÊÇÀîÑôͬѧÀûÓÃÕâ¸öÈÈÃôµç×èÖƳɵķõ»¯Æ÷ζȿØÖƵç·£¬ÆäÖпØÖƵç·µÄÊäÈë¶ËA¡¢BÄڽӵ緿ɵÈЧΪһ¸öµç¶¯ÊÆΪ2.0V£¬ÄÚ×èΪ100¦¸µÄµçÔ´£¬µ±Í¨¹ýÈÈÃôµç×èRµÄµçÁ÷´óÓÚµÈÓÚ2.0mAʱ£¬¿ØÖƵç·¶¯×÷£¬Êä³ö¶ËµÄ¿ª¹Ø¶Ï¿ª£¬¼ÓÈÈÆ÷Í£Ö¹¼ÓÈÈ£®·õ»¯Ð¡¼¦Ê±£¬ÒªÇó·õ»¯ÏäºãÎÂÔÚ39.5¡æ£¬Îª´Ë£¬ÀîÑô½«·õ»¯ÏäµÄ×î¸ßζÈÉ趨Ϊ40¡æ£»ÎªÊ¹ºãÎÂÏäÄÜÔÚ40¡æʱ¿ØÖƵç·¶¯×÷£¬¶¨Öµµç×èRaµÄ×èֵӦΪ
756
756
¦¸£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÔÚÐÅÏ¢¼¼Êõ¸ßËÙ·¢Õ¹¡¢µç×Ó¼ÆËã»ú¹ã·ºÓ¦ÓõĽñÌ죬µ£¸º×ÅÐÅÏ¢²É¼¯ÈÎÎñµÄ´«¸ÐÆ÷ÔÚ×Ô¶¯¿ØÖÆ¡¢ÐÅÏ¢´¦Àí¼¼ÊõÖз¢»Ó×ÅÔ½À´Ô½ÖØÒªµÄ×÷Óã¬ÆäÖÐÈȵ紫¸ÐÆ÷ÊÇÀûÓÃÈÈÃôµç×轫ÈÈÐźÅת»»³ÉµçÐźŵÄÔª¼þ£®Ä³Ñ§Ï°Ð¡×éµÄͬѧÔÚÓöàÓõç±íÑо¿ÈÈÃôµç×èÌØÐÔʵÑéÖУ¬°²×°ºÃÈçͼËùʾװÖã®Ïò±­ÄÚ¼ÓÈëÀäË®£¬Î¶ȼƵÄʾÊýΪ20¡æ£¬¶àÓõç±íÑ¡ÔñÊʵ±µÄ±¶ÂÊ£¬¶Á³öÈÈÃôµç×èµÄ×èÖµR1£¬È»ºóÏò±­ÄÚ¼ÓÈëÈÈË®£¬Î¶ȼƵÄʾÊýΪ60¡æ£¬·¢ÏÖ¶àÓõç±íµÄÖ¸Õëƫת½Ç¶È½Ï´ó£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A¡¢Ó¦Ñ¡ÓõçÁ÷µ²£¬Î¶ÈÉý¸ß»»ÓôóÁ¿³Ì²âÁ¿B¡¢Ó¦Ñ¡ÓõçÁ÷µ²£¬Î¶ÈÉý¸ß»»ÓÃСÁ¿³Ì²âÁ¿C¡¢Ó¦Ñ¡Óõç×èµ²£¬Î¶ÈÉý¸ßʱ»»Óñ¶ÂÊ´óµÄµ²D¡¢Ó¦Ñ¡Óõç×èµ²£¬Î¶ÈÉý¸ßʱ»»Óñ¶ÂÊСµÄµ²

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ijͬѧΪÑо¿ÈÈÃôµç×èRT£¨µç×èÖµËæζȵĸıä¶ø¸Ä±ä£¬ÇÒ¶ÔζȺÜÃô¸Ð£©µÄI-U¹Øϵ£¬Éè¼ÆÁËÈçͼ¼×ËùʾµÄµç·ͼ£¬

£¨1£©¸ÃͬѧÉè¼ÆʵÑéµç·²¢Á¬½ÓÁ˲¿·ÖʵÎÈçͼÒÒËùʾ£¬ÇëÓñʻ­Ïß´úÌæµ¼Ï߰ѵç·Á¬½ÓÍêÕû£»

£¨2£©¸Ãͬѧ¶ÔÁ½¸ö²»Í¬µÄÈÈÃôµç×èRA¡¢RB·Ö±ð½øÐÐÁ˲âÁ¿£¬µÃµ½ÁËÁ½¸öÈÈÃôµç×èµÄI-U¹ØϵÇúÏߣ¬Èçͼ±ûËùʾ¡£°ÑÈÈÃôµç×èRBÓ붨ֵµç×èR0£½250¦¸´®Áªºó½Óµ½Â·¶ËµçѹΪ3VµÄµçÔ´ÉÏ£¬´ËʱRBµÄ×èֵΪ    ¡ø   ¦¸¡£

£¨3£©¸ÃͬѧÓÖ½«RA¡¢RB¡¢¶¨Öµµç×èR0£½250¦¸ÓëµçѹºãΪ7VµÄÎÈѹµçÔ´Á¬½Ó£¬×é³ÉÈçͼ¶¡Ëùʾµç·£¬Ôò´Ëʱµç·ÖеĵçÁ÷´óСΪ    ¡ø   mA¡£

 


²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸