ÌâÄ¿ÄÚÈÝ
ÔÚ×ö¡°²â¶¨½ðÊôË¿µÄµç×èÂÊ¡±µÄʵÑéÖУ¬ÒÑÖª´ý²â½ðÊôË¿µÄµç×èԼΪ5¦¸£®
£¨1£©ÈôÓÃL±íʾ½ðÊôË¿µÄ³¤¶È£¬d±íʾֱ¾¶£¬²âµÃµç×èΪR£¬Çëд³ö¼ÆËã½ðÊôË¿µç×èÂʵıí´ïʽ¦Ñ=______£®
£¨2£©ÊµÑéʱ£¬Ä³×éͬѧÓÃÂÝÐý²â΢Æ÷²â½ðÊôË¿µÄÖ±¾¶£¬ÓöàÓõç±í¡°¡Á1¡±µ²²â¸Ã½ðÊôË¿µÄµç×裬¶þÕßµÄʾÊý·Ö±ðÈçͼ¼×¡¢ÒÒËùʾ£¬Ôò£º²âµÃ½ðÊôË¿µÄÖ±¾¶ÊÇ______mm£»½ðÊôË¿µÄµç×èÊÇ______¦¸£®
£¨3£©Èô²ÉÓ÷ü°²·¨²â¸Ã½ðÊôË¿µÄµç×裬¶øʵÑéÊÒÌṩÒÔÏÂÆ÷²Ä¹©Ñ¡Ôñ£º
A£®µç³Ø×飨3V£¬ÄÚ×èÔ¼1¦¸£©
B£®µçÁ÷±í£¨0¡«3A£¬ÄÚ×èÔ¼0.0125¦¸£©C£®µçÁ÷±í£¨0¡«0.6A£¬ÄÚ×èÔ¼0.125¦¸£©
D£®µçѹ±í£¨0¡«3V£¬ÄÚ×èÔ¼4k¦¸£©E£®µçѹ±í£¨0¡«15V£¬ÄÚ×èÔ¼15k¦¸£©
F£®»¬¶¯±ä×èÆ÷£¨0¡«20¦¸£¬ÔÊÐí×î´óµçÁ÷1A£©
G£®»¬¶¯±ä×èÆ÷£¨0¡«2000¦¸£¬ÔÊÐí×î´óµçÁ÷0.3A£©
H£®¿ª¹Ø¡¢µ¼ÏßÈô¸É£®
Çë»Ø´ð£º
2ʵÑéʱӦ´ÓÉÏÊöÆ÷²ÄÖÐÑ¡ÓÃ______£¨ÌîдÒÇÆ÷Ç°×Öĸ´úºÅ£©£»
¢ÚÔÚ×é³É²âÁ¿µç·ʱ£¬Ó¦²ÉÓõçÁ÷±í______½Ó·¨£¬´ý²â½ðÊôË¿µç×èµÄ²âÁ¿Öµ±ÈÕæʵֵƫ______£¨Ñ¡Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£»
¢Ûij´ÎʵÑé²âÁ¿Ê±£¬±íÃæ¿Ì¶È¼°Ö¸ÕëÈçͼËùʾ£¬ÔòʵÑéÊý¾ÝÓ¦¼Ç¼Ϊ£ºI=______A£¬U=______V£®
£¨1£©ÈôÓÃL±íʾ½ðÊôË¿µÄ³¤¶È£¬d±íʾֱ¾¶£¬²âµÃµç×èΪR£¬Çëд³ö¼ÆËã½ðÊôË¿µç×èÂʵıí´ïʽ¦Ñ=______£®
£¨2£©ÊµÑéʱ£¬Ä³×éͬѧÓÃÂÝÐý²â΢Æ÷²â½ðÊôË¿µÄÖ±¾¶£¬ÓöàÓõç±í¡°¡Á1¡±µ²²â¸Ã½ðÊôË¿µÄµç×裬¶þÕßµÄʾÊý·Ö±ðÈçͼ¼×¡¢ÒÒËùʾ£¬Ôò£º²âµÃ½ðÊôË¿µÄÖ±¾¶ÊÇ______mm£»½ðÊôË¿µÄµç×èÊÇ______¦¸£®
£¨3£©Èô²ÉÓ÷ü°²·¨²â¸Ã½ðÊôË¿µÄµç×裬¶øʵÑéÊÒÌṩÒÔÏÂÆ÷²Ä¹©Ñ¡Ôñ£º
A£®µç³Ø×飨3V£¬ÄÚ×èÔ¼1¦¸£©
B£®µçÁ÷±í£¨0¡«3A£¬ÄÚ×èÔ¼0.0125¦¸£©C£®µçÁ÷±í£¨0¡«0.6A£¬ÄÚ×èÔ¼0.125¦¸£©
D£®µçѹ±í£¨0¡«3V£¬ÄÚ×èÔ¼4k¦¸£©E£®µçѹ±í£¨0¡«15V£¬ÄÚ×èÔ¼15k¦¸£©
F£®»¬¶¯±ä×èÆ÷£¨0¡«20¦¸£¬ÔÊÐí×î´óµçÁ÷1A£©
G£®»¬¶¯±ä×èÆ÷£¨0¡«2000¦¸£¬ÔÊÐí×î´óµçÁ÷0.3A£©
H£®¿ª¹Ø¡¢µ¼ÏßÈô¸É£®
Çë»Ø´ð£º
2ʵÑéʱӦ´ÓÉÏÊöÆ÷²ÄÖÐÑ¡ÓÃ______£¨ÌîдÒÇÆ÷Ç°×Öĸ´úºÅ£©£»
¢ÚÔÚ×é³É²âÁ¿µç·ʱ£¬Ó¦²ÉÓõçÁ÷±í______½Ó·¨£¬´ý²â½ðÊôË¿µç×èµÄ²âÁ¿Öµ±ÈÕæʵֵƫ______£¨Ñ¡Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£»
¢Ûij´ÎʵÑé²âÁ¿Ê±£¬±íÃæ¿Ì¶È¼°Ö¸ÕëÈçͼËùʾ£¬ÔòʵÑéÊý¾ÝÓ¦¼Ç¼Ϊ£ºI=______A£¬U=______V£®
£¨1£©½ðÊôË¿µç×èR=¦Ñ
=¦Ñ
£¬Ôò½ðÊôË¿µç×èÂÊΪ£º¦Ñ=
£®
£¨2£©ÓÉͼ¼×ËùʾÂÝÐý²â΢Æ÷¿ÉÖª£¬¹Ì¶¨¿Ì¶ÈʾÊýΪ0.5mm£¬
¿É¶¯¿Ì¶ÈËùʾΪ40.0¡Á0.01mm=0.400mm£¬ÂÝÐý²â΢Æ÷µÄʾÊýΪ0.5mm+0.400mm=0.900mm£®
ÓÉͼÒÒËùʾ¶àÓõç±í¿ÉÖª£¬½ðÊôË¿µç×è×èֵΪ£ºR=7¡Á1¦¸=7¦¸£®
£¨3£©¢ÙµçÔ´µÄµç¶¯ÊÆΪ3V£¬Ôòµçѹ±íÁ¿³ÌÑ¡Ôñ0¡«3V£¬ÓÉÓÚËù²âµç×èԼΪ5¦¸£¬Ôò×î´óµçÁ÷Ϊ0.6A£¬ËùÒÔµçÁ÷±íµÄÁ¿³ÌÑ¡Ôñ0¡«0.6A£¬ÒòËù²âµç×èԼΪ5¦¸£¬ËùÒÔ»¬¶¯±ä×èÆ÷µÄ×èֵѡÔñ0¡«20¦¸£¬
¹ÊÑ¡£ºACDFH£»
¢ÚÒòRx2£¼RVRA£¬ÔòËù²âµç×èƫС£¬ÔòµçÁ÷±íÍâ½Ó·¨£®ÒòµçÁ÷±íµÄ²âÁ¿Öµ±ÈÕæʵֵ´ó£¬ËùÒÔµ¼Ö´ý²â½ðÊôË¿µç×èµÄ²âÁ¿Öµ±ÈÕæʵֵƫС£»
¢ÛµçÁ÷±íµÄÁ¿³ÌΪ0.6A£¬ÔòÆä¶ÁÊýΪ0.46A£»µçѹ±íµÄÁ¿³Ì3V£¬ÔòÆä¶ÁÊýΪ2.30V£®
´ð°¸£º£¨1£©
£»£¨2£©0.900£¬7
£¨3£©¢ÙACDFH£»¢ÚÍ⣬С£»¢Û0.46£»2.30£®
L |
S |
L | ||
|
¦ÐRd2 |
4L |
£¨2£©ÓÉͼ¼×ËùʾÂÝÐý²â΢Æ÷¿ÉÖª£¬¹Ì¶¨¿Ì¶ÈʾÊýΪ0.5mm£¬
¿É¶¯¿Ì¶ÈËùʾΪ40.0¡Á0.01mm=0.400mm£¬ÂÝÐý²â΢Æ÷µÄʾÊýΪ0.5mm+0.400mm=0.900mm£®
ÓÉͼÒÒËùʾ¶àÓõç±í¿ÉÖª£¬½ðÊôË¿µç×è×èֵΪ£ºR=7¡Á1¦¸=7¦¸£®
£¨3£©¢ÙµçÔ´µÄµç¶¯ÊÆΪ3V£¬Ôòµçѹ±íÁ¿³ÌÑ¡Ôñ0¡«3V£¬ÓÉÓÚËù²âµç×èԼΪ5¦¸£¬Ôò×î´óµçÁ÷Ϊ0.6A£¬ËùÒÔµçÁ÷±íµÄÁ¿³ÌÑ¡Ôñ0¡«0.6A£¬ÒòËù²âµç×èԼΪ5¦¸£¬ËùÒÔ»¬¶¯±ä×èÆ÷µÄ×èֵѡÔñ0¡«20¦¸£¬
¹ÊÑ¡£ºACDFH£»
¢ÚÒòRx2£¼RVRA£¬ÔòËù²âµç×èƫС£¬ÔòµçÁ÷±íÍâ½Ó·¨£®ÒòµçÁ÷±íµÄ²âÁ¿Öµ±ÈÕæʵֵ´ó£¬ËùÒÔµ¼Ö´ý²â½ðÊôË¿µç×èµÄ²âÁ¿Öµ±ÈÕæʵֵƫС£»
¢ÛµçÁ÷±íµÄÁ¿³ÌΪ0.6A£¬ÔòÆä¶ÁÊýΪ0.46A£»µçѹ±íµÄÁ¿³Ì3V£¬ÔòÆä¶ÁÊýΪ2.30V£®
´ð°¸£º£¨1£©
¦ÐRd2 |
4L |
£¨3£©¢ÙACDFH£»¢ÚÍ⣬С£»¢Û0.46£»2.30£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿