Ò»µçÁ÷±íµÄÁ¿³Ì±ê¶¨²»×¼È·£¬Ä³Í¬Ñ§ÀûÓÃͼËùʾµç·²âÁ¿¸ÃµçÁ÷±íµÄʵ¼ÊÁ¿³ÌIm£®
ËùÓÃÆ÷²ÄÓУºÁ¿³Ì²»×¼µÄµçÁ÷±íA1£¬ÄÚ×èr1=10.0¦¸£¬Á¿³Ì±ê³ÆΪ5.0mA£»±ê×¼µçÁ÷±íA2£¬ÄÚ×èr2=45.0¦¸£¬Á¿³Ì1.0mA£»±ê×¼µç×èR1£¬×èÖµ10.0¦¸£»»¬¶¯±ä×èÆ÷R£¬×ܵç×èΪ300.0¦¸£»µçÔ´E£¬µç¶¯ÊÆ3.0V£¬ÄÚ×è²»¼Æ£»±£»¤µç×èR2£»¿ª¹ØS£»µ¼Ïߣ®
»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚ´ðÌ⿨ÉÏ£¨Í¼2Ëùʾ£©µÄʵÎïͼÉÏ»­³öÁ¬Ïߣ®

¾«Ó¢¼Ò½ÌÍø

£¨2£©¿ª¹ØS±ÕºÏÇ°£¬»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶ËcÓ¦»¬¶¯ÖÁ______¶Ë£®
£¨3£©¿ª¹ØS±ÕºÏºó£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶Ë£¬Ê¹µçÁ÷±íA1ÂúÆ«£»Èô´ËʱµçÁ÷±íA2µÄ¶ÁÊýΪI2£¬ÔòA1µÄÁ¿³ÌIm=______£®
£¨1£©¸ù¾Ýµç·ͼÁ¬ÏßʵÎïͼ£¬ÈçͼËùʾ

¾«Ó¢¼Ò½ÌÍø

£¨2£©»¬¶¯±ä×èÆ÷²ÉÓÃÏÞÁ÷ʽ£¬Ó¦½«»¬¶¯´¥Í·»¬¶¯ÖÁ×èÖµ×î´ó¶Ë£®
£¨3£©¸ù¾ÝÅ·Ä·¶¨ÂÉÓ¦ÓУ»
I 2
(r 2
+R 1
)
=
I m
r
 1
  ½âµÃIm=
I2(R1+r2)
r1
£®
¹Ê´ð°¸Îª£¨1£©Èçͼ
        £¨2£©×èÖµ×î´ó
        £¨3£©
I 2
(R 1
+r 2
)
r 1
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»µçÁ÷±íµÄÁ¿³Ì±ê¶¨²»×¼È·£¬Ä³Í¬Ñ§ÀûÓÃͼ1Ëùʾµç·²âÁ¿¸ÃµçÁ÷±íµÄʵ¼ÊÁ¿³ÌIm£®
ËùÓÃÆ÷²ÄÓУºÁ¿³Ì²»×¼µÄµçÁ÷±íA1£¬ÄÚ×èr1=10.0¦¸£¬Á¿³Ì±ê³ÆΪ5.0mA£»±ê×¼µçÁ÷±íA2£¬ÄÚ×èr2=45.0¦¸£¬Á¿³Ì1.0mA£»±ê×¼µç×èR1£¬×èÖµ10.0¦¸£»»¬¶¯±ä×èÆ÷R£¬×ܵç×èΪ300.0¦¸£»µçÔ´E£¬µç¶¯ÊÆ3.0V£¬ÄÚ×è²»¼Æ£»±£»¤µç×èR2£»¿ª¹ØS£»µ¼Ïߣ®
»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚͼ2ËùʾµÄʵÎïͼÉÏ»­³öÁ¬Ïߣ®
£¨2£©¿ª¹ØS±ÕºÏÇ°£¬»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶ËcÓ¦»¬¶¯ÖÁ
b
b
¶Ë£®
£¨3£©¿ª¹ØS±ÕºÏºó£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶Ë£¬Ê¹µçÁ÷±íA1ÂúÆ«£»Èô´ËʱµçÁ÷±íA2µÄ¶ÁÊýΪI2£¬ÔòA1µÄÁ¿³ÌIm=
5.5I2
5.5I2
£®
£¨4£©Èô²âÁ¿Ê±£¬A1δµ÷µ½ÂúÆ«£¬Á½µçÁ÷±íµÄʾÊýÈçͼ3Ëùʾ£¬´ÓͼÖжÁ³öA1µÄʾÊýI1=
3.00mA
3.00mA
£¬A2µÄʾÊýI2=
0.660mA
0.660mA
£»ÓɶÁ³öµÄÊý¾Ý¼ÆËãµÃIm=
6.05mA
6.05mA
£®£¨±£Áô3λÓÐЧÊý×Ö£©
£¨5£©Ð´³öÒ»ÌõÌá¸ß²âÁ¿×¼È·¶ÈµÄ½¨Ò飺
¶à´Î²âÁ¿È¡Æ½¾ù
¶à´Î²âÁ¿È¡Æ½¾ù
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»µçÁ÷±íµÄÁ¿³Ì±ê¶¨²»×¼È·£¬Ä³Í¬Ñ§ÀûÓÃͼËùʾµç·²âÁ¿¸ÃµçÁ÷±íµÄʵ¼ÊÁ¿³ÌIm£®
ËùÓÃÆ÷²ÄÓУºÁ¿³Ì²»×¼µÄµçÁ÷±íA1£¬ÄÚ×èr1=10.0¦¸£¬Á¿³Ì±ê³ÆΪ5.0mA£»±ê×¼µçÁ÷±íA2£¬ÄÚ×èr2=45.0¦¸£¬Á¿³Ì1.0mA£»±ê×¼µç×èR1£¬×èÖµ10.0¦¸£»»¬¶¯±ä×èÆ÷R£¬×ܵç×èΪ300.0¦¸£»µçÔ´E£¬µç¶¯ÊÆ3.0V£¬ÄÚ×è²»¼Æ£»±£»¤µç×èR2£»¿ª¹ØS£»µ¼Ïߣ®
»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚ´ðÌ⿨ÉÏ£¨Í¼2Ëùʾ£©µÄʵÎïͼÉÏ»­³öÁ¬Ïߣ®

£¨2£©¿ª¹ØS±ÕºÏÇ°£¬»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶ËcÓ¦»¬¶¯ÖÁ
×èÖµ×î´ó
×èÖµ×î´ó
¶Ë£®
£¨3£©¿ª¹ØS±ÕºÏºó£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶Ë£¬Ê¹µçÁ÷±íA1ÂúÆ«£»Èô´ËʱµçÁ÷±íA2µÄ¶ÁÊýΪI2£¬ÔòA1µÄÁ¿³ÌIm=
I
 
2
(R
 
1
+r
 
2
)
r
 
1
I
 
2
(R
 
1
+r
 
2
)
r
 
1
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Ò»µçÁ÷±íµÄÁ¿³Ì±ê¶¨²»×¼È·£¬Ä³Í¬Ñ§ÀûÓÃͼ¼×Ëùʾµç·²âÁ¿¸ÃµçÁ÷±íµÄʵ¼ÊÁ¿³ÌIm£®ËùÓÃÆ÷²ÄÓУºÁ¿³Ì²»×¼µÄµçÁ÷±íA1£¬ÄÚ×èr1=10.0¦¸£¬Á¿³Ì±ê³ÆΪ5.0mA£»±ê×¼µçÁ÷±íA2£¬ÄÚ×èr2=45.0¦¸£¬Á¿³Ì1.0mA£»±ê×¼µç×èR1£¬×èÖµ10.0¦¸£»»¬¶¯±ä×èÆ÷R£¬×ܵç×èΪ300.0¦¸£»µçÔ´E£¬µç¶¯ÊÆ3.0V£¬ÄÚ×è²»¼Æ£»±£»¤µç×èR2£»¿ª¹ØS£»µ¼Ïߣ®»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©¸ù¾Ýµç·ͼ¼×£¬ÔÚ´ðÌ⿨ÉÏ£¨Í¼ÒÒËùʾ£©µÄʵÎïͼÉÏ»­³öÕýÈ·µÄÁ¬Ïߣ®
¾«Ó¢¼Ò½ÌÍø
£¨2£©¿ª¹ØS±ÕºÏÇ°£¬»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶ËcÓ¦»¬¶¯ÖÁ
 
¶Ë£®
£¨3£©¿ª¹ØS±ÕºÏºó£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶Ë£¬Ê¹µçÁ÷±íA1ÂúÆ«£»Èô´ËʱµçÁ÷±íA2µÄ¶ÁÊýΪI2£¬ÔòA1µÄÁ¿³ÌIm=
 
£®
£¨4£©Èô²âÁ¿Ê±£¬A1δµ÷µ½ÂúÆ«£¬Á½µçÁ÷±íµÄʾÊýÈçͼ±ûËùʾ£¬´ÓͼÖжÁ³öA1µÄʾÊýI1=
 
mA£¬A2µÄʾÊýI2=
 
mA£»ÓɶÁ³öµÄÊý¾Ý¼ÆËãµÃIm=
 
mA£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010Äê¸ß¿¼ÎïÀíÊÔÌâ·ÖÀà»ã±à¡ª¡ªµçѧʵÑé ÌâÐÍ£ºÊµÑéÌâ

£¨12·Ö£©Ò»µçÁ÷±íµÄÁ¿³Ì±ê¶¨²»×¼È·£¬Ä³Í¬Ñ§ÀûÓÃͼ1Ëùʾµç·²âÁ¿¸ÃµçÁ÷±íµÄʵ¼ÊÁ¿³Ì¡£

ËùÓÃÆ÷²ÄÓУºÁ¿³Ì²»×¼µÄµçÁ÷±í£¬ÄÚ×è=10.0£¬Á¿³Ì±ê³ÆΪ5.0mA£»±ê×¼µçÁ÷±í£¬ÄÚ×è=45.0£¬Á¿³Ì1.0mA£»±ê×¼µç×裬×èÖµ10.0£»»¬¶¯±ä×èÆ÷R£¬×ܵç×èΪ300.0£»µçÔ´E£¬µç¶¯ÊÆ3.0V£¬ÄÚ×è²»¼Æ£»±£»¤µç×裻¿ª¹ØS£»µ¼Ïß¡£
»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚ´ðÌ⿨ÉÏ£¨Í¼2Ëùʾ£©µÄʵÎïͼÉÏ»­³öÁ¬Ïß¡£

£¨2£©¿ª¹ØS±ÕºÏÇ°£¬»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶ËcÓ¦»¬¶¯ÖÁ              ¶Ë¡£
£¨3£©¿ª¹ØS±ÕºÏºó£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶Ë£¬Ê¹µçÁ÷±íÂúÆ«£»Èô´ËʱµçÁ÷±íµÄ¶ÁÊýΪ£¬ÔòµÄÁ¿³Ì=     ¡£
£¨4£©Èô²âÁ¿Ê±£¬Î´µ÷µ½ÂúÆ«£¬Á½µçÁ÷±íµÄʾÊýÈçͼ3Ëùʾ£¬´ÓͼÖжÁ³öµÄʾÊý =       £¬µÄʾÊý =         £»ÓɶÁ³öµÄÊý¾Ý¼ÆËãµÃ=    ¡££¨±£Áô3λÓÐЧÊý×Ö£©

£¨5£©Ð´³öÒ»ÌõÌá¸ß²âÁ¿×¼È·¶ÈµÄ½¨Ò飺                             ¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012½ìº£ÄÏÊ¡º£ÄÏÖÐѧ¸ß¶þÉÏѧÆÚÆÚÄ©¿¼ÊÔÀí¿ÆÎïÀíÊÔ¾í£¨´ø½âÎö£© ÌâÐÍ£ºÊµÑéÌâ

Ò»µçÁ÷±íµÄÁ¿³Ì±ê¶¨²»×¼È·£¬Ä³Í¬Ñ§ÀûÓÃͼ1Ëùʾµç·²âÁ¿¸ÃµçÁ÷±íµÄʵ¼ÊÁ¿³Ì¡£


ËùÓÃÆ÷²ÄÓУºÁ¿³Ì²»×¼µÄµçÁ÷±í£¬ÄÚ×è=10.0£¬Á¿³Ì±ê³ÆΪ5.0mA£»±ê×¼µçÁ÷±í£¬ÄÚ×è=45.0£¬Á¿³Ì1.0mA£»±ê×¼µç×裬×èÖµ10.0£»»¬¶¯±ä×èÆ÷R£¬×ܵç×èΪ300.0£»µçÔ´E£¬µç¶¯ÊÆ3. 0V£¬ÄÚ×è²»¼Æ£»±£»¤µç×裻¿ª¹ØS£»µ¼Ïß¡£»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚ´ðÌ⿨ÉÏ£¨Í¼2Ëùʾ£©µÄʵÎïͼÉÏ»­³öÁ¬Ïß¡£
£¨2£©¿ª¹ØS±ÕºÏÇ°£¬»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶ËcÓ¦»¬¶¯ÖÁ              ¶Ë¡£(Ìîa¶Ë , b¶Ë)
£¨3£©¿ª¹ØS±ÕºÏºó£¬µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬¶¯¶Ë£¬Ê¹µçÁ÷±íÂúÆ«£»Èô´ËʱµçÁ÷±íµÄ¶ÁÊýΪ£¬ÔòµÄÁ¿³Ì=     ¡££¨ÒÔ×Öĸ±í´ïʽ±í´ï£©
£¨4£©Èô²âÁ¿Ê±£¬Á½µçÁ÷±íµÄʾÊýÈçͼ3Ëùʾ£¬´ÓͼÖжÁ³öµÄʾÊý =       £¬µÄʾÊý =         £»

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸