ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿Ä³Í¬Ñ§½«Á¿³ÌΪ200¦ÌA¡¢ÄÚ×èΪ500¦¸µÄ±íÍ·¦ÌA¸Ä×°³ÉÁ¿³ÌΪ1mAºÍ10mAµÄË«Á¿³ÌµçÁ÷±í£¬Éè¼Æµç·Èçͼ£¨a£©Ëùʾ¡£¶¨Öµµç×èR1=500¦¸£¬R2ºÍR3µÄÖµ´ý¶¨£¬SΪµ¥µ¶Ë«ÖÀ¿ª¹Ø£¬A¡¢BΪ½ÓÏßÖù¡£»Ø´ðÏÂÁÐÎÊÌ⣺

£¨1£©°´Í¼£¨a£©ÔÚͼ£¨b£©Öн«ÊµÎïÁ¬Ïߣ»

£¨2£©±í±ÊµÄÑÕɫΪ É«£¨Ìî¡°ºì¡±»ò¡°ºÚ¡±£©

£¨3£©½«¿ª¹ØSÖÃÓÚ¡°1¡±µ²Ê±£¬Á¿³ÌΪ mA£»

£¨4£©¶¨Öµµç×èµÄ×èÖµR2= ¦¸£¬R3= ¦¸¡££¨½á¹ûÈ¡3λÓÐЧÊý×Ö£©

£¨5£©ÀûÓøÄ×°µÄµçÁ÷±í½øÐÐij´Î¶´Àïʱ£¬SÖÃÓÚ¡°2¡±µ²£¬±íͷָʾÈçͼ£¨c£©Ëùʾ£¬ÔòËù²âÁ¿µçÁ÷µÄֵΪ mA¡£

¡¾´ð°¸¡¿£¨1£©ÈçͼËùʾ £¨2£©ºÚ £¨3£©10 £¨4£©225 25.0 £¨5£©0.780£¨0.78ͬÑù¸ø·Ö£©

¡¾½âÎö¡¿£¨1£©ÊµÎïÁ¬Ïßͼ¼û´ð°¸£»

£¨2£©ºì±í±Ê½ÓµçÔ´µÄÕý¼«£¬µçÁ÷Óɺì±í±ÊÁ÷È룬Óɵç·ͼ£¨a£©¿É¿´³ö±íÍ·ÓÒ²àΪÕý¼«£¬¹Ê±í±ÊaΪºÚ±í±Ê£»

£¨3£©½«¿ª¹ØSÖÃÓÚ¡°1¡±µ²Ê±£¬±íÍ·¸ú´®ÁªºóÔÙ¸ú²¢Áª£¬½«¿ª¹ØSÖÃÓÚ¡°2¡±µ²Ê±£¬±íÍ·¸ú´®ÁªºóÔÙ¸ú²¢Áª£¬¹ÊÇ°ÕßµÄÁ¿³Ì½Ï´ó£¬¹Ê¿ª¹ØSÖÃÓÚ¡°1¡±µ²Ê±£¬Á¿³ÌΪ10mA.

£¨4£©ÓÉ£¨3£©ÎʵķÖÎö£¬½áºÏÅ·Ä·¶¨ÂÉ¿ÉÖª¿ª¹ØSÖÃÓÚ¡°1¡±µ²Ê±£¬ÓУ¬¿ª¹ØSÖÃÓÚ¡°2¡±µ²Ê±£¬ £¬´úÈëÒÑÖªÊý¾Ý¿ÉµÃ¦¸£¬ ¦¸¡£

£¨5£©SÖÃÓÚ¡°2¡±µ²Ê±£¬Á¿³ÌΪ1mA£¬±íͷʾÊýΪ156¦ÌA £¬¹ÊËù²âÁ¿µçÁ÷µÄֵΪmA =0.780mA.

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø