Á½Î»Í¬Ñ§ÔÚʵÑéÊÒÖÐÀûÓÃÈçͼ£¨a£©ËùʾµÄµç·²â¶¨¶¨Öµµç×èR0¡¢µçÔ´µÄµç¶¯ÊÆEºÍÄÚµç×èr£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·PÏòijһ·½ÏòÒƶ¯Ê±£¬Ò»¸öͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV1µÄ²âÁ¿Êý¾Ý£¬Áíһͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV2µÄ²âÁ¿Êý¾Ý£®²¢¸ù¾ÝÊý¾ÝÃè»æÁËÈçͼ£¨b£©ËùʾµÄÁ½ÌõU-IͼÏߣ®»Ø´ðÏÂÁÐÎÊÌ⣺

£¨1£©¸ù¾Ý¼×¡¢ÒÒÁ½Í¬Ñ§Ãè»æµÄͼÏߣ¬¿ÉÖª
AD
AD

A£®¼×ͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý
B£®¼×ͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý
C£®ÒÒͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý
D£®ÒÒͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý
£¨2£©Í¼ÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾµÄÎïÀíÒâÒåÊÇ
BC
BC

A£®»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·P»¬µ½ÁË×îÓÒ¶Ë
B£®µçÔ´µÄÊä³ö¹¦ÂÊ×î´ó
C£®¶¨Öµµç×èR0ÉÏÏûºÄµÄ¹¦ÂÊΪ0.5W
D£®µçÔ´µÄЧÂÊ´ïµ½×î´óÖµ
£¨3£©¸ù¾Ýͼ£¨b£©£¬¿ÉÒÔÇó³ö¶¨Öµµç×èR0=
2.0
2.0
¦¸£¬µçÔ´µç¶¯ÊÆE=
1.50
1.50
V£¬ÄÚµç×èr=
1.0
1.0
¦¸£®
·ÖÎö£º£¨1£©´Óµç·Á¬½Ó½áºÏµçÁ÷±íºÍµçѹ±íµÄ¶ÁÊý±ä»¯Åжϼס¢ÒÒÁ½Í¬Ñ§Ãè»æµÄͼÏߵĺ¬Ò壮
£¨2£©Í¼ÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾµçѹ±íV1µÄ¶ÁÊýÓëµçѹ±íV2µÄ¶ÁÊýÏàµÈ£¬¼´»¬¶¯±ä×èÆ÷µÄ×èֵΪ0£¬¸ù¾ÝͼÏóÇó½â£®
£¨3£©ÓÉͼ¿ÉÖª£¬Í¼ÏóÓÉ×Ý×ø±êµÄ½»µãΪµç¶¯ÊÆ£»ÓÉͼÏóÓëºá×ø±êµÄ½»µãÀûÓñպϵç·ŷķ¶¨ÂÉ¿ÉÇóµÃÄÚµç×裮
½â´ð£º½â£º£¨1£©´Óµç·Á¬½Ó¿ÉÒÔ¿´³ö£¬µçÁ÷±íAµÄ¶ÁÊýÔö´óʱ£¬µçѹ±íV1µÄ¶ÁÊý¼õС£¬µçѹ±íV2µÄ¶ÁÊýÔö´ó£®
¼×ͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý»æÖÆͼÏóµÄ£¬¹ÊB´íÎó£¬AÕýÈ·£»ÒÒͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý»æÖÆͼÏóµÄ£¬¹ÊC´íÎó£¬DÕýÈ·£®
¹ÊÑ¡AD£®
ͼÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾµçѹ±íV1µÄ¶ÁÊýÓëµçѹ±íV2µÄ¶ÁÊýÏàµÈ£¬¼´»¬¶¯±ä×èÆ÷µÄ×èֵΪ0£¬
A¡¢»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·P»¬µ½ÁË×î×ó¶Ë£¬¹ÊA´íÎó£»
B¡¢Í¼Ïó¿ÉÒԵóöµç×èR0µÄ×èÖµ´óÓÚµçÔ´µÄÄÚ×裬»¬¶¯±ä×èÆ÷µÄ×èÖµ¼õС£¬µçÔ´µÄÊä³ö¹¦ÂÊÔö´ó£¬Á½Ö±ÏߵĽ»µã¶ÔÓ¦»¬¶¯±ä×èÆ÷µÄ×èֵΪ0£¬¼´µçÔ´µÄÊä³ö¹¦ÂÊ×î´ó£¬¹ÊBÕýÈ·£»
C¡¢¶¨Öµµç×èR0ÏûºÄ¹¦ÂÊΪ£ºP=U2I=1.0¡Á0.5 W=0.5 W£¬¹ÊCÕýÈ·£»
D¡¢µçÔ´µÄЧÂÊΪ£º¦Ç=
UI
EI
=
U
E
£¬UÔ½´ó£¬Ð§ÂÊÔ½´ó£¬¹ÊD´íÎó£®
¹ÊÑ¡BC£®
£¨3£©´ÓͼÏó¿ÉÒԵóö¶¨Öµµç×èR0µÄ×èֵΪ£ºR0=
U2
I
=2.0¦¸£»
´Ó¼×ͬѧµÄͼÏó¿ÉÒԵóöͼÏóÔÚUÖáÉϵĽؾàΪ1.50 V£¬¼´µçÔ´µÄµç¶¯ÊÆΪ1.50 V£¬
ͼÏóбÂʵľø¶ÔֵΪ£ºk=
¡÷U1
¡÷I
=1.0£¬¼´µçÔ´µÄÄÚ×èΪr=1.0¦¸£®
¹Ê´ð°¸Îª£º£¨1£©AD¡¡£¨2£©BC¡¡£¨3£©2.0¡¡1.50¡¡1.0
µãÆÀ£º±¾Ì⿼²é²âÁ¿µç¶¯ÊƺÍÄÚµç×èʵÑéµÄÊý¾ÝºÍ¶¨Öµµç×èµçÁ÷¼°µçѹÊý¾ÝµÄ´¦Àí£¬²¢ÄÜÓÃͼÏó·¨Çó³öµçÊƺÍÄÚµç×裮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Á½Î»Í¬Ñ§ÔÚʵÑéÊÒÖÐÀûÓÃÈçͼ£¨1£©ËùʾµÄµç·²â¶¨¶¨Öµµç×èR0¡¢µçÔ´µÄµç¶¯ÊÆEºÍÄÚµç×èr£¬Í¼ÖÐabc·Ö±ð´ú±íÈýÖ»µç±í£¬ËüÃǵ±ÖÐÓÐÁ½Ö»µçѹ±íºÍÒ»Ö»µçÁ÷±í£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·PÏòijһ·½ÏòÒƶ¯Ê±£¬¼×ͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍÒ»Ö»µçѹ±íV1µÄ²âÁ¿Êý¾Ý£¬ÒÒͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍÁíÒ»Ö»µçѹ±íV2µÄ²âÁ¿Êý¾Ý£®²¢¸ù¾ÝÊý¾ÝÃè»æÁËÈçͼ£¨2£©ËùʾµÄÁ½ÌõU-IͼÏߣ®»Ø´ðÏÂÁÐÎÊÌ⣺
¢ÙͼÖÐa´ú±í
V2
V2
£¬b´ú±í
A
A
£¬c´ú±í
V1
V1
 £¨ÌîÉÏÈýÖ»µç±íµÄ·ûºÅ£¬Èç¡°A¡±¡¢¡°V1¡±»ò¡°V2¡±£©
¢Ú¸ù¾ÝͼÏóÍƶÏʵÑéÖÐËùÓû¬¶¯±ä×èÆ÷¿ÉÄÜÊÇÏÂÃæµÄÄÄÖÖ¹æ¸ñµÄ
B
B
£®
A.10¦¸£¬0.5A        B.20¦¸£¬0.1A
C.1k¦¸£¬200mA       D.2k¦¸£¬2A
¢Û¸ù¾Ýͼ£¨2£©£¬¿ÉÒÔÇó³ö¶¨Öµµç×èR0=
2
2
¦¸£¬µçÔ´µç¶¯ÊÆE=
1.5
1.5
V£¬ÄÚµç×èr=
1
1
¦¸£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2011?Ë«Á÷ÏØÄ£Ä⣩£¨1£©ÔÚ¡°²â¶¨ÔȱäËÙÖ±ÏßÔ˶¯¼ÓËٶȡ±µÄʵÑéÖУº
£¨1£©³ý´òµã¼ÆʱÆ÷£¨º¬Ö½´ø¡¢¸´Ð´Ö½£©¡¢Ð¡³µ¡¢Ò»¶Ë¸½Óл¬Âֵij¤Ä¾°å¡¢Ï¸Éþ¡¢¹³Âë¡¢µ¼Ïß¼°¿ª¹ØÍ⣬ÔÚÏÂÃæµÄÒÇÆ÷ºÍÆ÷²ÄÖУ¬±ØÐëʹÓõÄÓÐ
AC
AC
£®£¨ÌîÑ¡Ïî´úºÅ£©
A£®µçѹºÏÊʵÄ50HZ½»Á÷µçÔ´    B£®µçѹ¿Éµ÷µÄÖ±Á÷µçÔ´      C£®¿Ì¶È³ß     D£®Ãë±í         E£®Ììƽ
£¨2£©Í¼Ê¾ÎªÒ»´ÎʵÑéµÃµ½µÄÒ»ÌõÖ½´ø£¬Ö½´øÉÏÿÏàÁÚµÄÁ½¼ÆÊýµã¼ä¶¼ÓÐËĸöµãδ»­³ö£¬°´Ê±¼ä˳ÐòÈ¡0¡¢1¡¢2¡¢3¡¢4¡¢5¡¢6Æ߸ö¼ÆÊýµã£¬²â³ö1¡¢2¡¢3¡¢4¡¢5¡¢6µãµ½0µãµÄ¾àÀëÈçͼËùʾ£¨µ¥Î»£ºcm£©£®ÓÉÖ½´øÊý¾Ý¼ÆËã¿ÉµÃ¼ÆÊýµã4Ëù´ú±íʱ¿ÌµÄ¼´Ê±ËٶȴóСv4=
0.41
0.41
m/s£¬Ð¡³µµÄ¼ÓËٶȴóСa=
0.76
0.76
m/s2£¨×¢Ò⣺±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®

£¨2£©Á½Î»Í¬Ñ§ÔÚʵÑéÊÒÖÐÀûÓÃÈçͼ£¨a£©ËùʾµÄµç·²â¶¨¶¨Öµµç×èR0¡¢µçÔ´µÄµç¶¯ÊÆEºÍÄÚµç×èr£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·PÏòijһ·½ÏòÒƶ¯Ê±£¬Ò»¸öͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV1µÄ²âÁ¿Êý¾Ý£¬Áíһͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV2µÄ²âÁ¿Êý¾Ý£®²¢¸ù¾ÝÊý¾ÝÃè»æÁËÈçͼ£¨b£©ËùʾÁ½ÌõU-IͼÏߣ®»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©¸ù¾Ý¼×¡¢ÒÒÁ½Í¬Ñ§Ãè»æµÄͼÏߣ¬¿ÉÖª
AD
AD

A£®¼×ͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý
B£®¼×ͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý
C£®ÒÒͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý
D£®ÒÒͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý
£¨2£©Í¼ÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾµÄÎïÀíÒâÒåÊÇ
BC
BC

A£®»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·P»¬µ½ÁË×îÓҶˠ     B£®µçÔ´µÄÊä³ö¹¦ÂÊ×î´ó
C£®¶¨Öµµç×èR0ÉÏÏûºÄµÄ¹¦ÂÊΪ0.5W          D£®µçÔ´µÄЧÂÊ´ïµ½×î´óÖµ
£¨3£©¸ù¾Ýͼ£¨b£©£¬¿ÉÒÔÇó³ö¶¨Öµµç×èR0=
2.0
2.0
¦¸£¬µçÔ´µç¶¯ÊÆE=
1.5
1.5
V£¬ÄÚµç×èr=
1.0
1.0
¦¸£®£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨4£©¸Ãµç·ÖеçÁ÷±íµÄ¶ÁÊýÄÜ·ñ´ïµ½0.6A£¬ÊÔ˵Ã÷ÀíÓÉ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Á½Î»Í¬Ñ§ÔÚʵÑéÊÒÖÐÀûÓÃÈçͼ£¨a£©ËùʾµÄµç·²â¶¨¶¨Öµµç×èR0¡¢µçÔ´µÄµç¶¯ÊÆEºÍÄÚµç×èr£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·PÏòijһ·½ÏòÒƶ¯Ê±£¬Ò»¸öͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV1µÄ²âÁ¿Êý¾Ý£¬Áíһͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV2µÄ²âÁ¿Êý¾Ý£®²¢¸ù¾ÝÊý¾ÝÃè»æÁËÈçͼ£¨b£©ËùʾµÄÁ½ÌõU£­IͼÏߣ®»Ø´ðÏÂÁÐÎÊÌ⣺

  £¨1£©¸ù¾Ý¼×¡¢ÒÒÁ½Í¬Ñ§Ãè»æµÄͼÏߣ¬¿ÉÖª                                                       £¨¡¡¡¡£©

     A£®¼×ͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý

     B£®¼×ͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý

     C£®ÒÒͬѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý

     D£®ÒÒͬѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý

  £¨2£©Í¼ÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾµÄÎïÀíÒâÒåÊÇ                                                  £¨¡¡¡¡£©

     A£®»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·P»¬µ½ÁË×îÓҶˠ                        

     B£®µçÔ´µÄÊä³ö¹¦ÂÊ×î´ó

     C£®¶¨Öµµç×èR0ÉÏÏûºÄµÄ¹¦ÂÊΪ0£®5 W                          

     D£®µçÔ´µÄЧÂÊ´ïµ½×î´óÖµ

  £¨3£©¸ù¾Ýͼ£¨b£©£¬¿ÉÒÔÇó³ö¶¨Öµµç×èR0£½¡¡  ¦¸£¬µçÔ´µç¶¯ÊÆE£½¡¡¡¡V£¬ÄÚµç×èr£½¡¡¡¡¦¸£®

  £¨4£©¸Ãµç·ÖеçÁ÷±íµÄ¶ÁÊýÄÜ·ñ´ïµ½0£®6 A£¬ÊÔ˵Ã÷ÀíÓÉ£®

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012½ì¶Èɽ¶«Ê¡¼ÃÄþÊиßÈýÉÏѧÆÚÆÚÄ©¿¼ÊÔÎïÀí¾í ÌâÐÍ£ºÊµÑéÌâ

¼×¡¢ÒÒÁ½Î»Í¬Ñ§ÔÚʵÑéÊÒÖÐÀûÓÃÈçͼ£¨a£©ËùʾµÄµç·²â¶¨¶¨Öµµç×èR0¡¢µçÔ´µÄµç¶¯ÊÆEºÍÄÚ×èr£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·PÏòijһ·½ÏòÒƶ¯Ê±£¬Ò»¸öͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV1µÄ²âÁ¿Êý¾Ý£¬Áíһͬѧ¼Ç¼µÄÊǵçÁ÷±íAºÍµçѹ±íV2µÄ²âÁ¿Êý¾Ý£¬²¢¸ù¾ÝÊý¾ÝÃè»æÁËÈçͼ7£¨b£©ËùʾµÄÁ½ÌõU¡ªIͼÏߣ¬»Ø´ðÏÂÁÐÎÊÌ⣺

1.¸ù¾Ý¼×¡¢ÒÒÁ½Í¬Ñ§Ãè»æµÄͼÏߣ¬¿ÉÖª                              £¨    £©

A£®¼×ͼѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý

B£®¼×ͼѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý

C£®ÒÒͼѧÊǸù¾Ýµçѹ±íV1ºÍµçÁ÷±íAµÄÊý¾Ý

D£®ÒÒͼѧÊǸù¾Ýµçѹ±íV2ºÍµçÁ÷±íAµÄÊý¾Ý

2.ͼÏóÖÐÁ½Ö±ÏߵĽ»µã±íʾ»¬¶¯±ä×èÆ÷µÄ»¬¶¯´¥Í·P»¬µ½ÁË×î      ¶Ë£¨Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©

3.²»¸Ä¶¯ÏÂÃæʵÎïͼ£¨Í¼8£©ÖÐÒѽӵ¼Ïߣ¬Çë°´ÕÕʵÑéÔ­Àíͼ£¨Í¼7a£©ÔÚʵÎïͼÖаÑÐèÒªÁ¬½ÓµÄµ¼Ïß²¹»­ÉÏ¡£

4.¸ù¾Ýͼ7(b)£¬¿ÉÒÔÇó³ö¶¨Öµµç×èR0=            ¦¸£¬µçÔ´µç¶¯ÊÆE=           V£¬ÄÚ×èr=           ¦¸.

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸