ÌâÄ¿ÄÚÈÝ
С¸ÕͬѧÓÃÈçͼ¼×µç·̽¾¿¡°Ò»¶Îµç·ÖеçÁ÷¸úµç×èµÄ¹Øϵ¡±£®µçÔ´µçѹºãΪ6V£®¸Ä±äA¡¢B Á½µã¼äµÄµç×èÖµ£¬µ÷½Ú»¬¶¯±ä×èÆ÷»¬Æ¬£¬±£³ÖA¡¢BÁ½¶ËµÄµçѹ²»±ä£¬¼ÇÏÂÏàÓ¦µÄ4´ÎʵÑéµÄµçÁ÷ºÍµç×èÖµ£¬Ãè»æÔÚͼÒÒÖУ®
£¨1£©ÊµÑé¹ý³ÌÖУ¬Òƶ¯±ä×èÆ÷»¬Æ¬Ê±£¬ÑÛ¾¦Ó¦×¢ÊÓ
£¨2£©ÒÒͼÖÐÒõÓ°²¿·ÖÃæ»ý±íʾµÄÎïÀíÁ¿ÊÇ
£¨3£©ÊµÑéÖУ¬ËûËùÑ¡ÔñµÄ±ä×èÆ÷ÊÇ
£¨4£©ÔÚ´ËʵÑé¹ý³ÌÖУ¬µ±A¡¢B Á½µã¼äµÄµç×èÓÉ5¦¸¸ü»»Îª10¦¸ºó£¬ÎªÁË̽¾¿ÉÏÊöÎÊÌ⣬ËûÓ¦¸Ã²ÉÈ¡µÄΨһ²Ù×÷ÊÇ
A£®±£³Ö±ä×èÆ÷»¬Æ¬²»¶¯ B£®½«±ä×èÆ÷»¬Æ¬Êʵ±Ïò×óÒƶ¯
C£®½«±ä×èÆ÷»¬Æ¬Êʵ±ÏòÓÒÒƶ¯ D£®½«µç³Ø¸öÊýÔö¼Ó
£¨5£©ÔÚͼÒÒÖÐÓÃƽ»¬µÄÇúÏßÃè»æI-RͼÏߣ¬¿ÉµÃ½áÂÛ
£¨6£©ÊµÑé¹ý³ÌÖУ¬Èç¹û³öÏÖÁ˵çÁ÷±íʾÊýΪ0£¬µçѹ±íʾÊý½Ó½ü6V£¬µç··¢ÉúµÄ¹ÊÕÏ¿ÉÄÜÊÇ
£¨1£©ÊµÑé¹ý³ÌÖУ¬Òƶ¯±ä×èÆ÷»¬Æ¬Ê±£¬ÑÛ¾¦Ó¦×¢ÊÓ
µçѹ±íʾÊý
µçѹ±íʾÊý
µÄ±ä»¯£¨Ñ¡Ìî¡°±ä×èÆ÷»¬Æ¬¡±¡¢¡°µçѹ±íʾÊý¡±»ò¡°µçÁ÷±íʾÊý¡±£©£®£¨2£©ÒÒͼÖÐÒõÓ°²¿·ÖÃæ»ý±íʾµÄÎïÀíÁ¿ÊÇ
µç×èÁ½¶ËµÄµçѹ
µç×èÁ½¶ËµÄµçѹ
£®£¨3£©ÊµÑéÖУ¬ËûËùÑ¡ÔñµÄ±ä×èÆ÷ÊÇ
C¡°50¦¸2A¡±£©
C¡°50¦¸2A¡±£©
£¨A¡°10¦¸ 0.5A¡±/B¡°20¦¸ 1A¡±/C¡°50¦¸ 2A¡±£©£®£¨4£©ÔÚ´ËʵÑé¹ý³ÌÖУ¬µ±A¡¢B Á½µã¼äµÄµç×èÓÉ5¦¸¸ü»»Îª10¦¸ºó£¬ÎªÁË̽¾¿ÉÏÊöÎÊÌ⣬ËûÓ¦¸Ã²ÉÈ¡µÄΨһ²Ù×÷ÊÇ
C
C
A£®±£³Ö±ä×èÆ÷»¬Æ¬²»¶¯ B£®½«±ä×èÆ÷»¬Æ¬Êʵ±Ïò×óÒƶ¯
C£®½«±ä×èÆ÷»¬Æ¬Êʵ±ÏòÓÒÒƶ¯ D£®½«µç³Ø¸öÊýÔö¼Ó
£¨5£©ÔÚͼÒÒÖÐÓÃƽ»¬µÄÇúÏßÃè»æI-RͼÏߣ¬¿ÉµÃ½áÂÛ
µçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷ÓëËüµÄµç×è³É·´±È
µçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷ÓëËüµÄµç×è³É·´±È
£®£¨6£©ÊµÑé¹ý³ÌÖУ¬Èç¹û³öÏÖÁ˵çÁ÷±íʾÊýΪ0£¬µçѹ±íʾÊý½Ó½ü6V£¬µç··¢ÉúµÄ¹ÊÕÏ¿ÉÄÜÊÇ
µç×è¶Ï·
µç×è¶Ï·
£®·ÖÎö£º£¨1£©ÊµÑéÑо¿µÄÊǵçÁ÷Óëµç×èµÄ¹Øϵ£¬Òò´Ë±ØÐë¿ØÖƵç×èÁ½¶ËµÄµçѹֵһ¶¨£¬ËùÒÔÑÛ¾¦Ó¦×¢ÊÓµçѹ±íµÄʾÊý£¬Òƶ¯»¬Æ¬±£³Öµçѹ±íʾÊý²»±ä£»
£¨2£©ÒõÓ°²¿·ÖΪµçÁ÷ºÍµç×èµÄ³Ë»ý£¬Ó¦¸ÃΪ¶¨Öµµç×èÁ½¶ËµÄµçѹֵ£»
£¨3£©¸ù¾ÝͼÏóÖеÄijһµã£¬ÓÉU=IRÇó³öµç×èÁ½¶ËµÄµçѹֵ£¬¸ù¾Ý´®·ÖѹµÄ֪ʶ£¬µ±µç×èֵΪ20¦¸Ê±£¬ËùÐ軬¶¯±ä×èÆ÷µÄ×èÖµ×î´ó£¬¸ù¾Ý´®Áªµç·µÄµçÁ÷¡¢µçѹ¹æÂɽáºÏÅ·Ä·¶¨ÂÉÇó³ö»¬¶¯±ä×èÆ÷µÄ×èÖµ£¬±ã¿É½øÐÐÑ¡Ôñ£»
£¨4£©¸ù¾Ý´®·ÖѹµÄ֪ʶ£¬µ±A¡¢B Á½µã¼äµÄµç×èÓÉ5¦¸¸ü»»Îª10¦¸ºó£¬µç×èÁ½¶ËµÄµçѹ±ä´ó£¬ÈôÒª±£³Öµç×èÁ½¶ËµÄµçѹ²»±ä£¬Ó¦Ôö´ó»¬¶¯±ä×èÆ÷µÄ×èÖµ£»
£¨5£©½«Í¼ÒÒÖи÷µãÓÃƽ»¬µÄÇúÏßÁ¬½ÓÆðÀ´£¬·ÖÎöͼÏó¿ÉµÃ³öµçÁ÷Óëµç×èµÄ¹Øϵ£ºµçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷Óëµ¼ÌåµÄµç×è³É·´±È£»
£¨6£©Èôµç·ÖеçÁ÷ΪÁ㣬Ôò·¢Éú¶Ï·£¬µçѹ±íµÄʾÊý½Ó½üµçÔ´µçѹ£¬ÔòÓëµçѹ±í²¢ÁªµÄµç·¶Ï·£®
£¨2£©ÒõÓ°²¿·ÖΪµçÁ÷ºÍµç×èµÄ³Ë»ý£¬Ó¦¸ÃΪ¶¨Öµµç×èÁ½¶ËµÄµçѹֵ£»
£¨3£©¸ù¾ÝͼÏóÖеÄijһµã£¬ÓÉU=IRÇó³öµç×èÁ½¶ËµÄµçѹֵ£¬¸ù¾Ý´®·ÖѹµÄ֪ʶ£¬µ±µç×èֵΪ20¦¸Ê±£¬ËùÐ軬¶¯±ä×èÆ÷µÄ×èÖµ×î´ó£¬¸ù¾Ý´®Áªµç·µÄµçÁ÷¡¢µçѹ¹æÂɽáºÏÅ·Ä·¶¨ÂÉÇó³ö»¬¶¯±ä×èÆ÷µÄ×èÖµ£¬±ã¿É½øÐÐÑ¡Ôñ£»
£¨4£©¸ù¾Ý´®·ÖѹµÄ֪ʶ£¬µ±A¡¢B Á½µã¼äµÄµç×èÓÉ5¦¸¸ü»»Îª10¦¸ºó£¬µç×èÁ½¶ËµÄµçѹ±ä´ó£¬ÈôÒª±£³Öµç×èÁ½¶ËµÄµçѹ²»±ä£¬Ó¦Ôö´ó»¬¶¯±ä×èÆ÷µÄ×èÖµ£»
£¨5£©½«Í¼ÒÒÖи÷µãÓÃƽ»¬µÄÇúÏßÁ¬½ÓÆðÀ´£¬·ÖÎöͼÏó¿ÉµÃ³öµçÁ÷Óëµç×èµÄ¹Øϵ£ºµçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷Óëµ¼ÌåµÄµç×è³É·´±È£»
£¨6£©Èôµç·ÖеçÁ÷ΪÁ㣬Ôò·¢Éú¶Ï·£¬µçѹ±íµÄʾÊý½Ó½üµçÔ´µçѹ£¬ÔòÓëµçѹ±í²¢ÁªµÄµç·¶Ï·£®
½â´ð£º½â£º£¨1£©Ì½¾¿µçѹһ¶¨Ê±£¬µçÁ÷Óëµç×èµÄ¹Øϵʱ£¬ÔÚ²»¶ÏµÄ¸Ä±ä¶¨Öµµç×èµÄͬʱ£¬±ØÐë²»¶ÏµÄÒƶ¯»¬¶¯±ä×èÆ÷£¬Ê¹µÃµçѹ±íµÄʾÊýÊÇÒ»¸ö¶¨Öµ£¬¹ÊÔÚÒƶ¯»¬Æ¬µÄͬʱ£¬ÑÛ¾¦¹Û²ìµçѹ±íµÄʾÊý£»
£¨2£©ÒõÓ°²¿·ÖΪºá¡¢×Ý×ø±êµÄ³Ë»ý£¬¼´ÒõÓ°²¿·ÖµÄÃæ»ýΪ£ºS=IR=U£¬¼´²âÁ¿µÄÊǵçѹ£»
£¨3£©ÓÉͼÏóÖª£¬µ±R=20¦¸Ê±£¬µç·ÖеĵçÁ÷I=0.1A£¬ËùÒÔµç×èÁ½¶ËµÄµçѹΪ£º
UR=IR=0.1A¡Á20¦¸=2V£»
»¬¶¯±ä×èÆ÷Á½¶ËµÄµçѹU»¬=6V-2V=4V£»
»¬¶¯±ä×èÆ÷µÄ×èÖµR»¬=
=
=40¦¸
ËùÒÔӦѡÔñ»¬¶¯±ä×èÆ÷C£»
£¨4£©µç×èÓÉ5¦¸¸ü»»Îª10¦¸ºó£¬¸ù¾Ý´®·ÖѹµÄ֪ʶ£¬µç×èÁ½¶ËµÄµçѹ±ä´ó£¬ÈôÒª±£³Öµç×èÁ½¶ËµÄµçѹ²»±ä£¬Ó¦Ôö´ó»¬¶¯±ä×èÆ÷µÄ×裬½«»¬Æ¬ÏòÓҶ˻¬¶¯£¬ËùÒÔAB´íÎó£¬CÕýÈ·£»
ÈôÔö¼Óµç³ØµÄ¸öÊý£¬Ôòµç×èÁ½¶ËµÄµçѹ»á¸ü´ó£¬D´íÎó£»
£¨5£©½«Í¼ÒÒÖи÷µãÓÃƽ»¬µÄÇúÏßÁ¬½ÓÆðÀ´£¬ÈçͼËùʾ£º
ÓÉͼÏóÖª£¬µçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷ÓëËüµÄµç×è³É·´±È£»
£¨6£©ÈôµçÁ÷±íʾÊýΪ0£¬Ôòµç·ÖÐij´¦·¢Éú¶Ï·£¬µçѹ±íʾÊý½Ó½ü6V£¬Ôòµçѹ±íÁ½²àµÄµç·ÍêºÃ£¬Óëµçѹ±í²¢ÁªµÄµç×è·¢Éú¶Ï·ÏÖÏó£®
¹Ê´ð°¸Îª£º£¨1£©µçѹ±íʾÊý£»£¨2£©µç×èÁ½¶ËµÄµçѹ£»£¨3£©C¡°50¦¸ 2A¡±£»£¨4£©C£»£¨5£©µçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷ÓëËüµÄµç×è³É·´±È£»£¨6£©µç×è¶Ï·£®
£¨2£©ÒõÓ°²¿·ÖΪºá¡¢×Ý×ø±êµÄ³Ë»ý£¬¼´ÒõÓ°²¿·ÖµÄÃæ»ýΪ£ºS=IR=U£¬¼´²âÁ¿µÄÊǵçѹ£»
£¨3£©ÓÉͼÏóÖª£¬µ±R=20¦¸Ê±£¬µç·ÖеĵçÁ÷I=0.1A£¬ËùÒÔµç×èÁ½¶ËµÄµçѹΪ£º
UR=IR=0.1A¡Á20¦¸=2V£»
»¬¶¯±ä×èÆ÷Á½¶ËµÄµçѹU»¬=6V-2V=4V£»
»¬¶¯±ä×èÆ÷µÄ×èÖµR»¬=
U»¬ |
I |
4V |
0.1A |
ËùÒÔӦѡÔñ»¬¶¯±ä×èÆ÷C£»
£¨4£©µç×èÓÉ5¦¸¸ü»»Îª10¦¸ºó£¬¸ù¾Ý´®·ÖѹµÄ֪ʶ£¬µç×èÁ½¶ËµÄµçѹ±ä´ó£¬ÈôÒª±£³Öµç×èÁ½¶ËµÄµçѹ²»±ä£¬Ó¦Ôö´ó»¬¶¯±ä×èÆ÷µÄ×裬½«»¬Æ¬ÏòÓҶ˻¬¶¯£¬ËùÒÔAB´íÎó£¬CÕýÈ·£»
ÈôÔö¼Óµç³ØµÄ¸öÊý£¬Ôòµç×èÁ½¶ËµÄµçѹ»á¸ü´ó£¬D´íÎó£»
£¨5£©½«Í¼ÒÒÖи÷µãÓÃƽ»¬µÄÇúÏßÁ¬½ÓÆðÀ´£¬ÈçͼËùʾ£º
ÓÉͼÏóÖª£¬µçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷ÓëËüµÄµç×è³É·´±È£»
£¨6£©ÈôµçÁ÷±íʾÊýΪ0£¬Ôòµç·ÖÐij´¦·¢Éú¶Ï·£¬µçѹ±íʾÊý½Ó½ü6V£¬Ôòµçѹ±íÁ½²àµÄµç·ÍêºÃ£¬Óëµçѹ±í²¢ÁªµÄµç×è·¢Éú¶Ï·ÏÖÏó£®
¹Ê´ð°¸Îª£º£¨1£©µçѹ±íʾÊý£»£¨2£©µç×èÁ½¶ËµÄµçѹ£»£¨3£©C¡°50¦¸ 2A¡±£»£¨4£©C£»£¨5£©µçѹ²»±ä£¬µ¼ÌåÖеĵçÁ÷ÓëËüµÄµç×è³É·´±È£»£¨6£©µç×è¶Ï·£®
µãÆÀ£º´ËÌâÊÇ̽¾¿¡°Ò»¶Îµç·ÖеçÁ÷¸úµç×èµÄ¹Øϵ¡±ÊµÑ飬ʵÑéÖÐÒª¿ØÖƵç×èÁ½¶ËµÄµçѹ²»±ä£¬Í¬Ê±¿¼²éÁË»¬¶¯±ä×èÆ÷µÄÑ¡Ôñ£¬Éæ¼°µ½ÁË´®Áªµç·ÖÐÅ·Ä·¶¨ÂɵÄÓ¦Óü°µçÁ÷¡¢µçѹµÄ¹æÂÉ£»»¹¿¼²éÁËͼÏóµÄ»·¨ºÍ·ÖÎö¼°µç·¹ÊÕϵķÖÎö£¬Ö»ÒªÏ¸ÐÄ£¬ÌâÄ¿ÄѶȲ»ÊǺܴó£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
С¸ÕͬѧÓÃÈçͼ¼×ËùʾµÄµç·ͼ¶Ô¶î¶¨µçѹΪ2.5VµÄСµÆÅÝL½øÐÐÁËÏà¹ØʵÑé̽¾¿£¬ÊµÑéÖвâµÃµÆÅÝÁ½¶Ëµçѹ¡¢Í¨¹ýµÄµçÁ÷¡¢µÆË¿µÄµç×è¡¢µÆÅݵŦÂʺ͹۲쵽µÄµÆÅÝ·¢¹âÇé¿öµÈ£¬²¢¼ÇÈëÏÂ±í£º
¸ù¾ÝÒÔÉϹ۲쵽µÄÏÖÏóºÍ¼Ç¼µÄʵÑéÊý¾Ý
£¨1£©ÄãÈÏΪСµÆÅÝLµÄ¶î¶¨¹¦ÂÊΪ £®
£¨2£©Ð¡µÆÅÝLÔÚͨ¹ýµçÁ÷Ϊ0.26AʱÆäµç×èֵΪ £¨±£ÁôһλСÊý£©£®
£¨3£©´ÓÒÔÉϱí¸ñÖÐÄãÄܵóöµÆÅݹ¦ÂÊÓëÁÁ¶ÈµÄ¹ØϵÊÇ £®
£¨4£©Èô½«¸ÃµÆÅÝL½ÓÈëÈçͼÒÒËùʾµÄµç·ÖУ¬ÒÑÖªR=10¦¸£¬ºÏÉÏ¿ª¹Øºó£¬µçÁ÷±íʾÊýΪ0.26A£¬Ôòµç·ÏûºÄµÄ×ܹ¦ÂÊΪ £¨±£ÁôһλСÊý£©£®
ʵÑé ´ÎÊý |
µçѹU/V | µçÁ÷I/A | µç×èR/¦¸ | ¹¦ÂÊP/W | ·¢¹âÇé¿ö |
1 | 1.5 | 0.22 | 6.8 | 0.33 | ½Ï°µ |
2 | 2.0 | 0.26 | 0.52 | ½ÏÁÁ | |
3 | 2.5 | 0.30 | 8.3 | Õý³£·¢¹â |
£¨1£©ÄãÈÏΪСµÆÅÝLµÄ¶î¶¨¹¦ÂÊΪ
£¨2£©Ð¡µÆÅÝLÔÚͨ¹ýµçÁ÷Ϊ0.26AʱÆäµç×èֵΪ
£¨3£©´ÓÒÔÉϱí¸ñÖÐÄãÄܵóöµÆÅݹ¦ÂÊÓëÁÁ¶ÈµÄ¹ØϵÊÇ
£¨4£©Èô½«¸ÃµÆÅÝL½ÓÈëÈçͼÒÒËùʾµÄµç·ÖУ¬ÒÑÖªR=10¦¸£¬ºÏÉÏ¿ª¹Øºó£¬µçÁ÷±íʾÊýΪ0.26A£¬Ôòµç·ÏûºÄµÄ×ܹ¦ÂÊΪ
С¸ÕͬѧÓÃÈçͼ¼×ËùʾµÄµç·ͼ¶Ô¶î¶¨µçѹΪ2.5VµÄСµÆÅÝL½øÐÐÁËÏà¹ØʵÑé̽¾¿£¬ÊµÑéÖвâµÃµÆÅÝÁ½¶Ëµçѹ¡¢Í¨¹ýµÄµçÁ÷¡¢µÆË¿µÄµç×è¡¢µÆÅݵŦÂʺ͹۲쵽µÄµÆÅÝ·¢¹âÇé¿öµÈ£¬²¢¼ÇÈëÏÂ±í£º
¸ù¾ÝÒÔÉϹ۲쵽µÄÏÖÏóºÍ¼Ç¼µÄʵÑéÊý¾Ý
£¨1£©ÄãÈÏΪСµÆÅÝLµÄ¶î¶¨¹¦ÂÊΪ______£®
£¨2£©Ð¡µÆÅÝLÔÚͨ¹ýµçÁ÷Ϊ0.26AʱÆäµç×èֵΪ______£¨±£ÁôһλСÊý£©£®
£¨3£©´ÓÒÔÉϱí¸ñÖÐÄãÄܵóöµÆÅݹ¦ÂÊÓëÁÁ¶ÈµÄ¹ØϵÊÇ______£®
£¨4£©Èô½«¸ÃµÆÅÝL½ÓÈëÈçͼÒÒËùʾµÄµç·ÖУ¬ÒÑÖªR=10¦¸£¬ºÏÉÏ¿ª¹Øºó£¬µçÁ÷±íʾÊýΪ0.26A£¬Ôòµç·ÏûºÄµÄ×ܹ¦ÂÊΪ______£¨±£ÁôһλСÊý£©£®
ʵÑé ´ÎÊý | µçѹU/V | µçÁ÷I/A | µç×èR/¦¸ | ¹¦ÂÊP/W | ·¢¹âÇé¿ö |
1 | 1.5 | 0.22 | 6.8 | 0.33 | ½Ï°µ |
2 | 2.0 | 0.26 | 0.52 | ½ÏÁÁ | |
3 | 2.5 | 0.30 | 8.3 | Õý³£·¢¹â |
£¨1£©ÄãÈÏΪСµÆÅÝLµÄ¶î¶¨¹¦ÂÊΪ______£®
£¨2£©Ð¡µÆÅÝLÔÚͨ¹ýµçÁ÷Ϊ0.26AʱÆäµç×èֵΪ______£¨±£ÁôһλСÊý£©£®
£¨3£©´ÓÒÔÉϱí¸ñÖÐÄãÄܵóöµÆÅݹ¦ÂÊÓëÁÁ¶ÈµÄ¹ØϵÊÇ______£®
£¨4£©Èô½«¸ÃµÆÅÝL½ÓÈëÈçͼÒÒËùʾµÄµç·ÖУ¬ÒÑÖªR=10¦¸£¬ºÏÉÏ¿ª¹Øºó£¬µçÁ÷±íʾÊýΪ0.26A£¬Ôòµç·ÏûºÄµÄ×ܹ¦ÂÊΪ______£¨±£ÁôһλСÊý£©£®