ÌâÄ¿ÄÚÈÝ

¿ÕÆøʪ¶È/% | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
µç×èR/¦¸ | 300 | 210 | 150 | 100 | 75 | 50 | 40 | 30 | 25 |
£¨1£©Õý³£¹¤×÷ʱ£¬¼ÓʪװÖõŤ×÷µçÁ÷ÊǶàÉÙ£¿
£¨2£©·ÖÎö±í£¬´«¸Ðµç×èµÄ×èÖµËæ¿ÕÆøʪ¶ÈÈçºÎ±ä»¯£¿
£¨3£©ÈôÊÒÄÚʪ¶È¿ØÖÆÔÚ40¡«60%Ö®¼ä£¬ÇóÏÎÌú±»ÎüÏ¡¢¼ÓʪװÖõç·±»¶Ï¿ªÊ±£¬¼ÌµçÆ÷ÏßȦÖеĵçÁ÷±ä»¯·¶Î§ÊǶàÉÙ£¿
·ÖÎö£º£¨1£©¸ù¾Ý±êÓС°220V 44W¡±×ÖÑù£¬¿ÉÀûÓù«Ê½Ö±½ÓÇó³ö¼ÓʪװÖÃÕý³£¹¤×÷ʱµÄµçÁ÷£»
£¨2£©¹Û²ì±í¸ñÖÐÊý¾ÝµÄ±ä»¯Ç÷ÊÆ£¬¼´¿ÉÅж϶þÕߵĹØϵ£»
£¨3£©¶Á³ö±í¸ñÖжÔÓ¦ÔÚµÄÊý¾Ý£¬¼ÆËã³öÁ½¸öµãµÄµçÁ÷Öµ£¬±ã¿ÉµÃ³ö±ä»¯µÄ·¶Î§£®
£¨2£©¹Û²ì±í¸ñÖÐÊý¾ÝµÄ±ä»¯Ç÷ÊÆ£¬¼´¿ÉÅж϶þÕߵĹØϵ£»
£¨3£©¶Á³ö±í¸ñÖжÔÓ¦ÔÚµÄÊý¾Ý£¬¼ÆËã³öÁ½¸öµãµÄµçÁ÷Öµ£¬±ã¿ÉµÃ³ö±ä»¯µÄ·¶Î§£®
½â´ð£º½â£º£¨1£©¼ÓʪװÖõĵçÁ÷£ºI=
=
=0.2A£»
£¨2£©ÔĶÁ±í¸ñ¿ÉÖª£¬µ±¿ÕÆøʪ¶È´Ó10%Ôö´óµ½90%µÄ¹ý³ÌÖУ¬µç×è´Ó300¦¸¼õСµ½ÁË25¦¸£¬Òò´Ë£¬´«¸Ðµç×èµÄ×èÖµËæ¿ÕÆøʪ¶ÈµÄÔö´ó¶ø¼õС£»
£¨3£©µ±¿ÕÆøʪ¶ÈΪ40%ʱ£¬¿ØÖƵç·ÖеĵçÁ÷£ºI1=
=
=0.03A£»
µ±¿ÕÆøʪ¶ÈΪ60%ʱ£¬¿ØÖƵç·ÖеĵçÁ÷£ºI2=
=
=0.04A£®
¹Ê¼ÌµçÆ÷ÏßȦÖеĵçÁ÷±ä»¯·¶Î§ÊÇ0.03 A¡«0.04A£®
´ð£º£¨1£©Õý³£¹¤×÷ʱ£¬¼ÓʪװÖõŤ×÷µçÁ÷ÊÇ0.2A£»
£¨2£©µç×èËæ¿ÕÆøʪ¶ÈµÄÔö¼Ó¶øÔö´ó£»
£¨3£©¼ÌµçÆ÷ÏßȦÖеĵçÁ÷±ä»¯·¶Î§ÊÇ0.03 A¡«0.04A£®
P |
U |
44W |
220V |
£¨2£©ÔĶÁ±í¸ñ¿ÉÖª£¬µ±¿ÕÆøʪ¶È´Ó10%Ôö´óµ½90%µÄ¹ý³ÌÖУ¬µç×è´Ó300¦¸¼õСµ½ÁË25¦¸£¬Òò´Ë£¬´«¸Ðµç×èµÄ×èÖµËæ¿ÕÆøʪ¶ÈµÄÔö´ó¶ø¼õС£»
£¨3£©µ±¿ÕÆøʪ¶ÈΪ40%ʱ£¬¿ØÖƵç·ÖеĵçÁ÷£ºI1=
U |
R1+R2 |
6V |
100¦¸+100¦¸ |
µ±¿ÕÆøʪ¶ÈΪ60%ʱ£¬¿ØÖƵç·ÖеĵçÁ÷£ºI2=
U | ||
|
6V |
50¦¸+100¦¸ |
¹Ê¼ÌµçÆ÷ÏßȦÖеĵçÁ÷±ä»¯·¶Î§ÊÇ0.03 A¡«0.04A£®
´ð£º£¨1£©Õý³£¹¤×÷ʱ£¬¼ÓʪװÖõŤ×÷µçÁ÷ÊÇ0.2A£»
£¨2£©µç×èËæ¿ÕÆøʪ¶ÈµÄÔö¼Ó¶øÔö´ó£»
£¨3£©¼ÌµçÆ÷ÏßȦÖеĵçÁ÷±ä»¯·¶Î§ÊÇ0.03 A¡«0.04A£®
µãÆÀ£º¶Á¶®ÕâÒ»×°ÖõŤ×÷ÔÀí£¬²¢ÓëÌṩµÄÏà¹ØÊý¾ÝÏà¶ÔÓ¦£¬±ã¿ÉÀûÓù«Ê½½øÐÐÇó½â£®ÇóµçÁ÷µÄ±ä»¯·¶Î§Ê±£¬ÒªÇó³öÁ½¸ö¶Ëµã£¬²ÅÄÜÈ·¶¨Æ䷶Χ£¬ÕâÊÇÎÒÃÇÓ¦¸ÃÊìÖªµÄ£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿