Èçͼ1ËùʾΪһºãÎÂÏäοصç·£¬°üÀ¨¹¤×÷µç·ºÍ¿ØÖƵç·Á½²¿·Ö£¬RΪÈÈÃôµç×裨ÖÃÓÚºãÎÂÏäÄÚ£©£¬×èÖµËæζȱ仯µÄ¹ØϵÈçͼ2Ëùʾ£¬ºãÎÂÏäοصç·¹¤×÷Ô­ÀíÊÇ£º¼ÓÈȹý³ÌÖУ¬ºãÎÂÏäζÈÉý¸ßµ½Ò»¶¨ÖµÊ±£¬¿ØÖƵç·ÖеçÁ÷»á´ïµ½Ò»¶¨Öµ£¬¼ÌµçÆ÷µÄÏÎÌú±»ÎüºÏ£¬¹¤×÷µç·ֹͣ¼ÓÈÈ£®
£¨1£©Í¼ÖÐËùʾ״̬£¬µç·´¦ÓÚ¼ÓÈÈ»¹ÊÇδ¼ÓÈÈ£¿
£¨2£©ºãÎÂÏäµÄζÈΪ100¡æʱ£¬¼ÌµçÆ÷ÏßȦÖеĵçÁ÷´ïµ½20mA£¬ÏÎÌú±»ÎüºÏ£¬´ËʱÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊÊǶàÉÙ£¿
£¨3£©µç×èR¡äÓÐʲô×÷Óã¿

¡¾´ð°¸¡¿·ÖÎö£º£¨1£©¸ù¾Ý±»¿ØÖƵç·ÖеçÈÈË¿ÊÇ·ñ¹¤×÷Åжϱ»¿Øµç·µÄ¹¤×÷״̬£»
£¨2£©¸ù¾Ýͼ2¶Á³ö100¡æʱÈÈÃôµç×èµÄ×èÖµ£¬ÔÙ¸ù¾ÝP=I2RÇó³ö´ËʱÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊ£»
£¨3£©Í¼Öеç×èR¡äΪ»¬¶¯±ä×èÆ÷£¬»¬¶¯±ä×èÆ÷µÄ×÷ÓÃÒ»ÊDZ£»¤µç·£¬¶þÊÇ¿ÉÒÔµ÷½ÚÈÈÃôµç×èµÄ×èÖµ´ïµ½µ÷½ÚοØÏäµÄ¿ØÖÆζȣ®
½â´ð£º½â£º£¨1£©ÓÉͼ1¿ÉÖª£¬µçÈÈ˿ͨ·£¬´¦ÓÚ¼ÓÈÈ״̬£»
£¨2£©ÓÉͼ2¿ÉÖª£¬ºãÎÂÏäµÄζÈΪ100¡æʱ£¬ÈÈÃôµç×èµÄ×èÖµR=50¦¸£¬
ÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊ£º
P=I2R=£¨0.02A£©2×50¦¸=0.02W£»
£¨3£©Í¼Öеç×èR¡äΪ»¬¶¯±ä×èÆ÷£¬Æä×÷ÓÃÓУºÒ»ÊDZ£»¤µç·£¬¶þÊǵ÷½ÚοØÏäµÄ¿ØÖÆζȣ®
´ð£º£¨1£©¼ÓÈÈ£»
£¨2£©ÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊÊÇ0.02W£»
£¨3£©Ò»ÊDZ£»¤µç·£¬¶þÊǵ÷½ÚοØÏäµÄ¿ØÖÆζȣ®
µãÆÀ£º±¾Ì⿼²éÁ˵繦µÄ¼ÆËãºÍ»¬¶¯±ä×èÆ÷µÄ×÷Óã¬Ã÷°×ºãÎÂÏäοصç·¹¤×÷µÄÔ­ÀíÊǹؼü£¬Í¬Ê±×¢Ò⻬¶¯±ä×èÆ÷ÔÚ²»Í¬µç·ÖеÄ×÷Óã®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2013?ÔÆÄÏ£©Èçͼ1ËùʾΪһºãÎÂÏäοصç·£¬°üÀ¨¹¤×÷µç·ºÍ¿ØÖƵç·Á½²¿·Ö£¬RΪÈÈÃôµç×裨ÖÃÓÚºãÎÂÏäÄÚ£©£¬×èÖµËæζȱ仯µÄ¹ØϵÈçͼ2Ëùʾ£¬ºãÎÂÏäοصç·¹¤×÷Ô­ÀíÊÇ£º¼ÓÈȹý³ÌÖУ¬ºãÎÂÏäζÈÉý¸ßµ½Ò»¶¨ÖµÊ±£¬¿ØÖƵç·ÖеçÁ÷»á´ïµ½Ò»¶¨Öµ£¬¼ÌµçÆ÷µÄÏÎÌú±»ÎüºÏ£¬¹¤×÷µç·ֹͣ¼ÓÈÈ£®
£¨1£©Í¼ÖÐËùʾ״̬£¬µç·´¦ÓÚ¼ÓÈÈ»¹ÊÇδ¼ÓÈÈ£¿
£¨2£©ºãÎÂÏäµÄζÈΪ100¡æʱ£¬¼ÌµçÆ÷ÏßȦÖеĵçÁ÷´ïµ½20mA£¬ÏÎÌú±»ÎüºÏ£¬´ËʱÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊÊǶàÉÙ£¿
£¨3£©µç×èR¡äÓÐʲô×÷Óã¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2013Äê³õÖбÏÒµÉýѧ¿¼ÊÔ£¨ÔÆÄÏ¾í£©ÎïÀí£¨½âÎö°æ£© ÌâÐÍ£º¼ÆËãÌâ

ÈçͼËùʾΪһºãÎÂÏäοصç·£¬°üÀ¨¹¤×÷µç·ºÍ¿ØÖƵç·Á½²¿·Ö¡£RΪÈÈÃôµç×è(ÖÃÓÚºãÎÂÏäÄÚ)£¬×èÖµËæζȱ仯µÄ¹ØϵÈçͼËùʾ¡£ºãÎÂÏäοصç·¹¤×÷Ô­ÀíÊÇ£º¼ÓÈȹý³ÌÖУ¬ºãÎÂÏäζÈÉý¸ßµ½Ò»¶¨ÖµÊ±£¬¿ØÖƵç·ÖеçÁ÷»á´ïµ½Ò»¶¨Öµ£¬¼ÌµçÆ÷µÄÏÎÌú±»ÎüºÏ£¬¹¤×÷µç·ֹͣ¼ÓÈÈ¡£

(1)ͼÖÐËùʾ״̬£¬µç·´¦ÓÚ¼ÓÈÈ»¹ÊÇδ¼ÓÈÈ?

(2)ºãÎÂÏäµÄζÈΪ100¡æʱ£¬¼ÌµçÆ÷ÏßȦÖеĵçÁ÷´ïµ½20mA£¬ÏÎÌú±»ÎüºÏ£¬´ËʱÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊÊǶàÉÙ?

(3)µç×èR¡ä£¬ÓÐʲô×÷ÓÃ?

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

Èçͼ1ËùʾΪһºãÎÂÏäοصç·£¬°üÀ¨¹¤×÷µç·ºÍ¿ØÖƵç·Á½²¿·Ö£¬RΪÈÈÃôµç×裨ÖÃÓÚºãÎÂÏäÄÚ£©£¬×èÖµËæζȱ仯µÄ¹ØϵÈçͼ2Ëùʾ£¬ºãÎÂÏäοصç·¹¤×÷Ô­ÀíÊÇ£º¼ÓÈȹý³ÌÖУ¬ºãÎÂÏäζÈÉý¸ßµ½Ò»¶¨ÖµÊ±£¬¿ØÖƵç·ÖеçÁ÷»á´ïµ½Ò»¶¨Öµ£¬¼ÌµçÆ÷µÄÏÎÌú±»ÎüºÏ£¬¹¤×÷µç·ֹͣ¼ÓÈÈ£®
£¨1£©Í¼ÖÐËùʾ״̬£¬µç·´¦ÓÚ¼ÓÈÈ»¹ÊÇδ¼ÓÈÈ£¿
£¨2£©ºãÎÂÏäµÄζÈΪ100¡æʱ£¬¼ÌµçÆ÷ÏßȦÖеĵçÁ÷´ïµ½20mA£¬ÏÎÌú±»ÎüºÏ£¬´ËʱÈÈÃôµç×èRÏûºÄµÄ¹¦ÂÊÊǶàÉÙ£¿
£¨3£©µç×èR¡äÓÐʲô×÷Óã¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Èçͼl5ËùʾΪһºãÎÂÏäοصç·£¬°üÀ¨¹¤×÷µç·ºÍ¿ØÖƵç·Á½²¿·Ö¡£RΪÈÈÃôµç×è(ÖÃÓÚºãÎÂÏäÄÚ)£¬×èÖµËæζȱ仯µÄ¹ØϵÈçͼ16Ëùʾ¡£ºãÎÂÏäοصç·¹¤×÷Ô­ÀíÊÇ£º¼ÓÈȹý³ÌÖУ¬ºãÎÂÏäζÈÉý¸ßµ½Ò»¶¨ÖµÊ±£¬¿ØÖƵç·ÖеçÁ÷»á´ïµ½Ò»¶¨Öµ£¬¼ÌµçÆ÷µÄÏÎÌú±»ÎüºÏ£¬¹¤×÷µç·ֹͣ¼ÓÈÈ¡£

(1)ͼÖÐËùʾ״̬£¬µç·´¦ÓÚ¼ÓÈÈ»¹ÊÇδ¼ÓÈÈ?

(2)ºãÎÂÏäµÄζÈΪ]00ocʱ£¬¼ÌµçÆ÷ÏßȦÖеĵçÁ÷´ïµ½20mA£¬ÏÎÌú±»ÎüºÏ£¬´ËʱÈÈÃôµç ×èRÏûºÄµÄ¹¦ÂÊÊǶàÉÙ?

(3)µç×èR1£¬ÓÐʲô×÷ÓÃ?

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸