ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿¶ÔÓÚͬһÎïÀíÎÊÌ⣬³£³£¿ÉÒÔ´Óºê¹ÛÓë΢¹ÛÁ½¸ö²»Í¬½Ç¶È½øÐÐÑо¿£¬ÕÒ³öÆäÄÚÔÚÁªÏµ£¬´Ó¶ø¸ü¼ÓÉî¿ÌµØÀí½âÆäÎïÀí±¾ÖÊ¡£Ò»¶Îºá½ØÃæ»ýΪS¡¢³¤ÎªlµÄÖ±µ¼Ïߣ¬µ¥Î»Ìå»ýÄÚÓÐn¸ö×ÔÓɵç×Ó£¬Ò»¸öµç×ÓµçÁ¿Îªe¡£¸Ãµ¼ÏßͨÓк㶨µçÁ÷ʱ£¬µ¼ÏßÁ½¶ËµÄµçÊƲîΪU£¬¼ÙÉè×ÔÓɵç×Ó¶¨ÏòÒƶ¯µÄËÙÂʾùΪv¡£
£¨1£©Çóµ¼ÏßÖеĵçÁ÷I£»
£¨2£©ËùνµçÁ÷×ö¹¦£¬ÊµÖÊÉÏÊǵ¼ÏßÖеĺ㶨µç³¡¶Ô×ÔÓɵçºÉµÄ¾²µçÁ¦×ö¹¦¡£ÎªÁËÇó½âÔÚʱ¼ätÄÚµçÁ÷×ö¹¦WΪ¶àÉÙ£¬Ð¡ºìºÍСÃ÷¸ø³öÁ˲»Í¬µÄÏë·¨£º
Сºì¼ÇµÃÀÏʦÉϿν²¹ý£¬W=UIt£¬Òò´Ë½«µÚ£¨1£©ÎÊÇó³öµÄIµÄ½á¹û´úÈ룬¾Í¿ÉÒԵõ½WµÄ±í´ïʽ¡£µ«ÊÇСºì²»¼ÇµÃÀÏʦÊÇÔõÑùµÃ³öW=UItÕâ¸ö¹«Ê½µÄ¡£Ð¡Ã÷Ìá³ö£¬¼ÈÈ»µçÁ÷×ö¹¦Êǵ¼ÏßÖеĺ㶨µç³¡¶Ô×ÔÓɵçºÉµÄ¾²µçÁ¦×ö¹¦£¬ÄÇôӦ¸ÃÏÈÇó³öµ¼ÏßÖеĺ㶨µç³¡µÄ³¡Ç¿£¬¼´£¬Éèµ¼ÌåÖÐÈ«²¿µçºÉΪqºó£¬ÔÙÇó³öµç³¡Á¦×öµÄ¹¦£¬½«q´ú»»Ö®ºó£¬Ð¡Ã÷ûÓеóöW=UItµÄ½á¹û¡£
ÇëÎÊÄãÈÏΪСºìºÍСÃ÷Ë˵µÄ¶Ô£¿ÈôÊÇСºì˵µÄ¶Ô£¬Çë¸ø³ö¹«Ê½µÄÍƵ¼¹ý³Ì£»ÈôÊÇСÃ÷˵µÄ¶Ô£¬Çë²¹³äÍêÉÆÕâ¸öÎÊÌâÖеçÁ÷×ö¹¦µÄÇó½â¹ý³Ì¡£
£¨3£©ÎªÁ˸üºÃµØÃèÊöij¸öСÇøÓòµÄµçÁ÷·Ö²¼Çé¿ö£¬ÎïÀíѧ¼ÒÒýÈëÁ˵çÁ÷ÃܶÈÕâÒ»ÎïÀíÁ¿£¬¶¨ÒåÆä´óСΪµ¥Î»Ê±¼äÄÚͨ¹ýµ¥Î»Ãæ»ýµÄµçÁ¿¡£ÈôÒÑÖª¸Ãµ¼ÏßÖеĵçÁ÷ÃܶÈΪj£¬µ¼Ïߵĵç×èÂÊΪ¦Ñ£¬ÊÔÖ¤Ã÷£º¡£
¡¾´ð°¸¡¿£¨1£©£¨2£©¼û½âÎö£¨3£©¼û½âÎö
¡¾½âÎö¡¿£¨1£©µçÁ÷¶¨Òåʽ£¬ÔÚtʱ¼äÄÚ£¬Á÷¹ýºá½ØÃæµÄµçºÉÁ¿£¬Òò´Ë£»
£¨2£©Ð¡ºìºÍСÃ÷˵µÄ¶¼ÓÐÒ»¶¨µÀÀí
a.Сºì˵µÄ¶Ô¡£ÓÉÓÚ£¬ÔÚtʱ¼äÄÚͨ¹ýijһºá½ØÃæµÄµçÁ¿Q=It£¬¶ÔÓÚÒ»¶Îµ¼ÏßÀ´Ëµ£¬Ã¿¸öºá½ØÃæͨ¹ýµÄµçÁ¿¾ùΪQ£¬Ôò´ÓÁ½¶ËÀ´¿´£¬Ï൱ÓÚQµÄµçºÉµçÊƽµµÍÁËU£¬Ôò
¡£
b.СÃ÷˵µÄ¶Ô¡£ºã¶¨µç³¡µÄ³¡Ç¿£¬µ¼ÌåÖÐÈ«²¿µçºÉΪ£¬
µç³¡Á¦×öµÄ¹¦£»
ÓÖÒòΪ£¬Ôò¡£
£¨3£©ÓÉÅ·Ä·¶¨ÂÉ£º¡¢£¬¡¢Óɵç×趨ÂÉ£º£»
Ôò£¬Ôò£»
ÓɵçÁ÷ÃܶȵĶ¨Ò壺£»
¹Ê£»