ÌâÄ¿ÄÚÈÝ
11£®Ä³Ð£¿ªÕ¹Ñ§Éú×Ô¼º¶¯ÊÖ½øÐÐʵÑé²Ù×÷µÄ»î¶¯£¬Í¬Ñ§ÃÇÏÖÒª²â¶¨µç×èRsµÄ×èÖµÒÔ¼°Ò»½Ú¸Éµç³ØµÄ¶¯¶¯ÊƺÍÄÚ×裬³ý´ËÖ®Í⻹±¸ÓÐÈçÏÂÆ÷²Ä£ºA£®µçѹ±íV£ºÁ¿³ÌΪ2V¡¢ÄÚ×è½Ï´ó
B£®µç×èÏäR1£º×Ü×èֵΪ9999.9¦¸
C£®¿ª¹Ø¡¢µ¼ÏßÈô¸É
£¨1£©Ä³Í¬Ñ§Ñ¡ÓÃÅ·Ä·±í¡°¡Á10¡±µµ£¬´ÖÂÔ²â³öδ֪µç×èµÄÊýÖµÈçͼ¼×Ëùʾ£¬ÔòRx=220¦¸£®
£¨2£©¸ÃͬѧΪÁ˽Ï׼ȷµØ²â¶¨RxµÄµç×èÖµÒÔ¼°µç³ØµÄµç¶¯ÊƺÍÄÚ×裬ijͬѧѡÔñÈçͼÒÒËùʾµÄµç·£®
¸Ãͬѧ¸ù¾Ýµç·ͼÁ¬½ÓʵÎïͼºó£¬²â¶¨µç×èRxʱÖ÷Òª½øÐÐÁËÁ½²½ÊµÑ飮
µÚ1²½£º±ÕºÏS0ºóSÖÃÓÚλÖÃ2£¬¼Ç¼µçѹ±íʾÊýU=1.2V£»
µÚ2²½£ºÈÔ±ÕºÏS0£¬ÔÙ½«SÖÃÓÚλÖÃ1£¬µ÷½Úµç×èÏ䣬µ±R=200¦¸Ê±µçѹ±íʾÊýÈÔΪ1.2V£¬Ôò±»²âµç×èRxµÄµç×èֵΪ200¦¸£®
£¨3£©Í¨¹ý¸Ä±äµç·µÄ×ܵç×裬¼Ç¼Íâµç×èµÄ×ܵç×èÖµRºÍ¶ÔÓ¦Çé¿öϵĵçѹ±íʾÊýU£¬»³ö$\frac{1}{U}$Ëæ$\frac{1}{R}$±ä»¯µÄͼÏßΪֱÏߣ¬Èçͼ±ûËùʾ£¬ÈôÒÑÖªÖ±ÏßÓë×ÝÖáµÄ½»µã×ø±êΪb=0.69¡¢Ð±ÂÊΪk=1.59£¬ÔòµçÔ´µç¶¯ÊÆΪ1.45V£¬ÄÚ×èΪ2.17¦¸£¨ÒÔÉÏÁ½¿Õ±£ÁôÈýλÓÐЧÊý×Ö£©£»´ÓʵÑéÔÀíÀ´¿´£¬ÊµÑé²âÁ¿ÖµÓëÕæʵֵÏà±È½Ï£¬µç¶¯ÊÆEÔ£¼E¸±£¬ÄÚ×èrÔ£¼r¹â£¨×îºóÁ½¿ÕÑ¡Ìî¡°£¾¡±¡¢¡°£¼¡±»ò¡°=¡±£©£®
·ÖÎö £¨1£©¸ù¾ÝÅ·Ä·±íµÄ¶ÁÊý·½·¨¿ÉµÃ³öµç×èÖµ£»
£¨2£©·ÖÎöµç·½á¹¹£¬¸ù¾ÝÌæ´ú·¨¼´¿ÉÃ÷È·´ý²âµç×èÖµ£»
£¨3£©¸ù¾Ý±ÕºÏµç·ŷķ¶¨ÂÉÇó³ö$\frac{1}{U}$-$\frac{1}{R}$µÄ¹Øϵʽ£¬½áºÏͼÏóµÄбÂʺͽؾàÇó³öµç¶¯ÊƺÍÄÚ×裬¿¼Âǵçѹ±íÓÐÄÚ×è·ÖÎöÎó²î£®¸ù¾Ýµç±íÄÚ×èµÄÓ°Ïì·ÖÎöʵÑéÎó²îÇé¿ö£®
½â´ð ½â£º£¨1£©Å·Ä·±í¶ÁÊýΪָÕëʾÊýÓ뵵λµÄ»ý£¬¹Ê¶ÁÊýΪ£º22¡Á10=220¦¸£»
£¨2£©±ÕºÏS0ºóSÖÃÓÚλÖÃ2£¬RxÖ±½Ó½ÓÔÚµçÔ´Á½¶Ë£¬µçѹ±í²âÁ¿RxÁ½¶ËµÄµçѹ£¬±ÕºÏS0£¬ÔÙ½«SÖÃÓÚλÖÃ1£¬RÖ±½Ó½ÓÔÚµçÔ´Á½¶Ë£¬µçѹ±í²âÁ¿RÁ½¶ËµÄµçѹ£¬Á½´ÎʵÑéµçѹֵÏàµÈ£¬ÔòRxµÄµç×èÖµÓëRµÄ×èÖµÏàµÈ£¬¼´Rx=R=200¦¸£¬
£¨3£©¸ù¾Ý±ÕºÏµç·ŷķ¶¨Âɵãº
E=U+$\frac{U}{R}$r
½âµÃ£º$\frac{1}{U}$=$\frac{r}{E}$•$\frac{1}{R}$+$\frac{1}{E}$
ËùÒÔ$\frac{1}{U}$-$\frac{1}{R}$
ͼÏóµÄбÂÊk=$\frac{r}{E}$£¬Ö±ÏßÓë×ÝÖáµÄ½Ø¾àb=$\frac{1}{E}$
½âµÃ£ºE=$\frac{1}{b}$=$\frac{1}{0.69}$=1.45V£»
r=$\frac{k}{b}$=$\frac{1.5}{0.69}$=2.17¦¸£¬
ÓÉÓÚµçѹ±íÒ²ÓÐÄÚ×裬ÔòµçÔ´ÄÚ×è²âÁ¿ÖµµÈÓÚµçѹ±íÄÚ×èÓëµçÔ´ÄÚ×èµÄ²¢ÁªÖµ£¬ËùÒÔ²âÁ¿ÖµÆ«Ð¡£»ÓÉk=$\frac{r}{E}$¿ÉÖª£¬²âÁ¿ÖµrƫС£¬Ôòµç¶¯ÊƲâÁ¿ÖµÆ«Ð¡£®
¹Ê´ð°¸Îª£º£¨1£©220£»£¨2£©200£»£¨3£©1.45£¬2.17£¬£¼£¬£¼£®
µãÆÀ ±¾Ì⿼²é²âÁ¿µç¶¯ÊƺÍÄÚµç×èʵÑé¡¢²âÁ¿µç×èʵÑéµÄÊý¾ÝµÄ´¦Àí£¬ÒªÇóÄÜÕýÈ··ÖÎöÎó²îµÄÀ´Ô´£¬²¢ÄÜÓÃͼÏó·¨Çó³öµçÊƺÍÄÚµç×裮
A£® | ÓɦØ=$\frac{v}{r}$Öª£¬ÐÐÐǹìµÀ°ë¾¶Ô½´ó£¬½ÇËÙ¶ÈԽС | |
B£® | ÓÉa=r¦Ø2Öª£¬ÐÐÐǹìµÀ°ë¾¶Ô½´ó£¬ÐÐÐǵļÓËÙ¶ÈÔ½´ó | |
C£® | ÓÉ$\frac{GMm}{{r}^{2}}$=m$\frac{{v}^{2}}{r}$Öª£¬ÐÐÐǵĹìµÀ°ë¾¶Ô½´ó£¬ÏßËÙ¶ÈԽС | |
D£® | ÓÉa=$\frac{{v}^{2}}{r}$Öª£¬ÐÐÐǹìµÀ°ë¾¶Ô½´ó£¬ÐÐÐǵļÓËÙ¶ÈԽС |
A£® | µç³¡Ç¿¶È´¦´¦ÎªÁãµÄÇøÓòÄÚ£¬µçÊÆÒ²Ò»¶¨´¦´¦ÎªÁã | |
B£® | µç³¡Ç¿¶ÈµÄ·½Ïò×ÜÊǸúµÈÊÆÃæ´¹Ö± | |
C£® | µç³¡Ç¿¶È´¦´¦ÏàͬµÄÇøÓòÄÚ£¬µçÊÆÒ²Ò»¶¨´¦´¦Ïàͬ | |
D£® | µçÊƽµµÍµÄ·½Ïò¾ÍÊǵ糡ǿ¶ÈµÄ·½Ïò |
A£® | ÈôͼÏó±íʾ¼ÓËÙ¶ÈËæʱ¼äµÄ±ä»¯£¬ÔòÃæ»ýµÈÓÚÖʵãÔÚÏàӦʱ¼äÄÚµÄλÒÆ | |
B£® | ÈôͼÏó±íʾÁ¦ËæλÖõı仯£¬ÔòÃæ»ýµÈÓÚ¸ÃÁ¦ÔÚÏàӦλÒÆÄÚËù×öµÄ¹¦ | |
C£® | ÈôͼÏó±íʾµçÈÝÆ÷³äµçµçÁ÷Ëæʱ¼äµÄ±ä»¯£¬ÔòÃæ»ýµÈÓÚÏàӦʱ¼äÄÚµçÈÝÆ÷´¢´æµÄµçÄÜ | |
D£® | ÈôͼÏó±íʾµçÊÆËæλÖõı仯£¬ÔòÃæ»ýµÈÓڵ糡x0λÖô¦µÄµç³¡Ç¿¶È |
A£® | µçÁ÷Ç¿¶ÈI=$\frac{q}{t}$ | B£® | Õæ¿ÕÖеãµçºÉµç³¡³¡Ç¿E=$\frac{kQ}{{r}^{2}}$ | ||
C£® | µçÊƲîU=$\frac{W}{q}$ | D£® | µçÈÝC=$\frac{Q}{U}$ |
A£® | $\frac{{¦Ø{r_1}}}{r_3}$ | B£® | ¦Ø | C£® | $\frac{{¦Ø{r_3}}}{r_1}$ | D£® | $\frac{{¦Ø{r_1}{r_2}}}{r_3^2}$ |
A£® | Óë×ÔÐгµÐÐÊ»·½ÏòÏà·´ | B£® | Óë×ÔÐгµÐÐÊ»·½ÏòÏàͬ | ||
C£® | Óë³µÂÖת¶¯·½ÏòÏàͬ | D£® | ÒÔÉÏÇé¿ö¶¼ÓпÉÄÜ |