高中物理选修3-2期末测试题及答案.doc

collection, storage, protection facilities can not meet the archives in the new era, the collection, collation, protection requirements, especially the lag of archive information management. 2, a part-time archivists of training and learning there is still a lack of the knowledge structure of archivists is not comprehensive enough, still can not meet the needs of archives work, in-depth development of the archives work. Measures to solve the Bureau will in future work of archives management to be improved effectively. One is to overcome the shortage of personnel difficulties, concentrate on finishing a good historical archives. The second is to further strengthen archives management training efforts, focusing on the study of archives management, utilization and archives laws and regulations etc. Knowledge to further enhance archival consciousness of cadres and workers and do a good job in the consciousness of the archives work, improve the efficiency in the use of archives. The third is to further improve the level of archives management equipment, with the continuous development of the archives work, overcome the financial resources, lack of material enlarged the file management of equipment investment. In a word, on the basis of insufficient to improve, global will work together, I Bureau of archives management work standardized track to play of archives work in the protection of peoples livelihood, improve the livelihood of the people, the fundamental role of serving the peoples livelihood.XX County Culture and sports and News Publishing Bureau is responsible for the main work is the work of sports culture, press and publication work. In order to further improve my bureau of agriculture related funds management, strengthen regulation of agriculture related funds, improve efficiency in the use of agriculture related funds, effectively improve and enhance the peoples production and living standard of people. According to the (precious Zhengban pass 2015 No. 40) the spirit of the document, I Bureau in a timely manner to global within the scope of agriculture related special funds for the project source, uses, use of self-examination and self correction, self inspection shall be reported to the Sue.A work of self correction, agriculture related funds (a) report of lottery funds of agriculture related funds of self-examination and rectification workThe cat chase chase chase were received by 2013 the lottery public welfare fund project funds use: I Bureau Finance Bureau file your wealth 2013 No. 603 file, your wealth 2014 45 file. Your wealth 2014 45 file notice: 2013 farmer sports fitness project and village level public service basketball field construction capital of 690 million yuan, of which (Wei Dong Tang Cun, Li Xiang Xin Cun, Li Xiang Fu Tuan Cun, Li Xiang Tan Yang village, Hong Cheng Zhen Shan Cun, Qingfeng Zhen Tai Xing Cun 1.15 million yuan). The funds have been the County Finance Bureau of the budget shares issued directly to the township wealth County tube office, has been allocated to the township specific units . your wealth chasing 2013 document No.高中物理选修3-2期末测试题命题人：邹纪平 学生姓名： 测试成绩：第I卷(选择题12小题 共 36分)P一选择题(本题包括12小题,每小题3分，共36分。每小题给出的四个选项中,有的只有一个选项正确,有的有多个选项正确,全部选对的得3分,选对但不全对的得2分,有选错的或不答的得0分)1.关于电磁场理论,下列说法正确的是:( )A.变化的电场周围产生的磁场一定是变化的 B. 变化的磁场周围产生的电场不一定是变化的C. 均匀变化的磁场周围产生的电场也是均匀变化的 D. 振荡电场周围产生的磁场也是振荡的2.质子和一价钠离子分别垂直进入同一匀强磁场中做匀速圆周运动,如果它们的圆周半径恰好相等,这说明它们在刚进入磁场时:( )A.速率相等 B.带电量相等 C.动量大小相等 D.质量相等3.矩形线圈ABCD位于通电直导线附近,如图所示,线圈和导线在同一平面内,且线圈的两个边与导线平行,下列说法正确的是:( )BCDAIA.当线圈远离导线移动时,线圈中有感应电流 B.当导线中的电流I逐渐增大或减小时,线圈中无感应电流C.当线圈以导线为轴转动时,线圈中有感应电流D.当线圈以CD为轴转动时,线圈中有感应电流4.若在磁场是由地球表面带电产生的,则地球表面带电情况是: ( )A.正电 B.负电 C.不带电 D.无法确定5.关于日光灯的工作原理下列说法正确的是: ( )A. 启动器触片接通时,产生瞬时高压 B. 日光灯正常工作时,镇流器起降压限流以保证日光灯正常工作C.日光灯正常工作时, 日光灯管的电压稳定在220V D.镇流器作用是将交流电变为直流电6.矩形线圈在匀强磁场中,绕垂直磁场方向的轴匀速转动时,线圈跟中性面重合的瞬间,下列说法中正确的是: ( )A.线圈中的磁通量为零 B. 线圈中的感应电动势最大C. 线圈的每一边都不切割磁感线 D.线圈所受到的磁场力不为零+-BE7.正离子源发射出正离子经加速电压后,进入互相垂直的电场和磁场中,电场和磁场方向如图所示,发现离子向上偏转,要使离子沿直线通过混合场,需要: ( )A.增大电场强度E,减小磁感应强度BB.增大电场强度E,减小加速电压UC.适当增大加速电压UD.适当减小电场强度E8.如图所示是日立NP82C21型电视机电路的开始部分,最左边是电源插头,S901是电源开关,F901是保险丝,L901是两只带铁芯的电感线圈,后面复杂的电路没有画出.关于电感线圈的作用,以下叙述正确的是: ( )A.打开电源的瞬间,线圈会产生自感电动势,自感电动势的作用是使电视机更容易起动,所以我们刚一打开电视机就能听到声音和图象B.线圈在电路里起的是缓冲作用,能延缓开机瞬间电流对后面元件的冲击,提高电视机的使用寿命abcdOOC.电视机正常工作之后,线圈就不会产生自感电动势了D.线圈的自感系数越大越好C901L901F901S901AC220/50Hz9.如图所示,abcd为一闭合金属线框，用绝缘线挂在固定点O，当线框经过匀强磁场摆动时，可以判断（空气阻力不计）:( )A.线框进入磁场或离开磁场时，线框中均有感应电流产生 B.线框进入磁场后，越靠近OO/线时，电磁感应现象越明显C.此摆最终会停下来 D.此摆的机械能不守恒10.如图所示,L为一个带铁芯的线圈,R是纯电阻,两支路的直流电阻相等,那么在接通和断开开关瞬间,两表的读数I1和I2的大小关系分别是: ( )A. I1I2 B. I1I2, I1I2 C. I1I2, I1=I2 D. I1=I2, I1EbEc B. EaEbEc C. EaEcA2A1RLSA2A1V2V1ab12.一理想变压器给负载供电,变压器输入电压不变,如图所示.如果负载电阻的滑片向上移动则图中所有交流电表的读数及输入功率变化情况正确的是(均为理想电表): ( )A.V1、V2不变，A1增大，A2减少，P增大 B. V1、V2不变，A1 、A2增大，P增大C. V1、V2不变，A1、A2减少，P减少 D. V1不变、V2增大，A1、A2减少，P减少第II卷(非选择题 64分)二.填空题(每小题6分,共24分)13.如图所示，电阻Rab=0.1的导体ab沿光滑导线框向右做匀速运动线框中接有电阻R=0.4,线框放在磁感应强度B=0.1T的匀强磁场中,磁场方向垂直于线框平面,导体的ab长度l=0.4m,运动速度v=10m/s.线框的电阻不计.dcabvR(1)电路abcd中相当于电源的部分是 ,相当于电源的正极是 端.(2)使导体ab向右匀速运动所需的外力F= N,方向 (3)电阻R上消耗的功率P = W.(4)外力的功率P= 14.如图所示,线圈内有理想边界的磁场,当磁感应强度均匀增加时,有一带电粒子静止于水平放置的平行板电容器中间,则此粒子带 电,若增大磁感应强度的变化率,则带电粒子将 (填“向上运动”“向下运动”或静止”)P副线圈原线圈Po15.当屏幕上出现如图所示的波形时,应调节 旋钮.(填写数字或旋钮名称) 以使正弦波的整个波形出现在屏幕上.16.如图所示,是用来做电磁感应实验装置的示意图,当闭合开关S时,发现电流表的指针向左偏转一下后,又回到中央位置.现继续进行实验（1）把原线圈插入副线圈的过程中,电流表的指针将 .(2)把原线圈插入副线圈后电流表的指针将 (3)原、副线圈保持不动,把变阻器滑动片P向右移动过程中,电流表的指针将 三.计算题:(本题共4个题,计40分,解答时写出必要的文字说明,方程式和重要演算步骤,只写出最后答案的不能得分,有数值计算的题,答案中必须明确写出数值和单位)B)abP17.(8分)如图所示,两根平行放置的导电轨道,间距为L,倾角为,轨道间接有电动势为E(内阻不计)的电源,整个导轨处在一个竖直向上的匀强磁场中,电阻为R的金属杆ab与轨道垂直放于导电轨道上静止,轨道的摩擦和电阻无不计,要使ab杆静止,磁感应强度应多大?（设金属杆的质量为m）OcbdBaOVASR18. (10分) 如图所示,为交流发电机示意图，匝数为n=100匝矩形线圈，边长分别10cm和20cm，内电阻r=5，在磁感应强度B=0.5T的匀强磁场中绕OO以轴= rad/s角速度匀速转动，线圈和外电阻为R=20相连接，求:(1)S断开时，电压表示数；(2)开关S合上时，电压表和电流表示数。 19. (10分)某发电站,通过升压变压器、输电线和降压变压器，把电能输送给生产和照明组成的用户，发电机输出功率为100kW，输出电压是400V，升压变压器原、副线圈的匝数之比为1:25，输电线上功率损失为4%，用户所需电压为220V，求：(1)输电线的电阻和降压变压器的匝数比为多少? (2)若有60kW分配给生产，其余电能用来照明，那么可供40W的电灯多少盏？abSO20.(12分)如图所示,真空室内存在匀强磁场,磁场方向垂直于图中纸面向里,磁感应强度的大小B=0.6T,磁场内有一个平面感光板ab,板面与磁场方向平行,在距ab的距离为L=16cm处,有一个点状放射源S,它向各个方向发射粒子,粒子的速度都是v=3.0106m/s.已知粒子的电荷量与质量之比q/m=5.0107C/kg.现只考虑到图纸平面中运动的粒子,求:(1)粒子的轨道半径和做匀速圆周运动的周期.(2)ab上被粒子打中的区域长度.参考答案一.选择题1.BD 2.C 3.AD 4.B 5.B 6.C7.CD 8.B 9.AD10.C 11.C 12.C二.填空题.13. (1) ab,a(2)0.032向右(3)0.256W(4)0.32W 14.负,向上运动 15.6或竖直位移旋钮16.(1)左偏 (2)指零或回到中央 (3)右偏三.计算题.NBPmg) 17.以轨道为研究对象受力分析,则: （2分）（2分）（2分） （2分）18. （7分）解:(1) V （2分）E=V （2分） 所以S断开时,电压表示数为50V（1分）(2)A （2分） V （2分）所以闭合时,电压表示数为40V,电流表示数为2A (1分)19. 解:(1) 因为,所以VI2= P/ U2=100103/10000=10A又（3分）VU3=U2-U=10000-400=9600V（3分）（2）P灯=P-kW（2分）abSOd2RMP1QP2cn= P灯/P1=36103/40=900盏（2分）20.(1)m (3分)s (3分)(2)由几何知识可知,SP1=2r,应为右侧最远处.cm (2分)运动轨迹在左侧相切处P2为最远处 cm (2分)所以区域长度为d=12+8=20cm (2分)603 notice: lottery public welfare funds support the place of sports funding 46.05 million yuan. Among them: (a) 2013 farmer sports fitness project and the two project 12.6 million yuan, including (Qing Feng Zhen Qing Ling Cun Da Qiao Tun, Hong town Wanghuacun Wang Gang Tun, Qing Feng Zhen Da Tong Cun Ma Tun, Wei Zhen Da Lian Cun Lian Tang tun the 3.15 million yuan); (II) 2013 Township farmer sports fitness project site construction funds 27.45 million yuan, including (XX town, Qingfeng County, XX County Township, XX County, the stone village the 9.15 million yuan); (three) in 2013 Urban and rural landscape transformation of the fifth phase project of village basketball field construction funds subsidy of $6 million, including (Qing Feng Zhen Qing Ling Cun Xi Tun, Hong Cheng Zhen Shi Zhai Cun, Da Wei Zhen Da Wei cooperatives in the county 2 million yuan). These funds has the County Finance Bureau budget shares issued by the Bureau, the Bureau has allocated by township wealth County tube office moved to the township specific units.2014 the lottery project funds use: I received Finance Bureau file your wealth chasing 2014 document No. 453. Your wealth chasing 2014 document No. 453 notice: lottery public welfare funds support the place of sports funding 19.45 million yuan, including: (a) 2014 farmer sports fitness project township level basketball field construction funds of 13.45 million yuan (XX County township of 13.45 million). The fund the fund has County Bureau of finance budget shares issued directly to township wealth County tube office, has allocated to Xiang; (II) XX Chaoyang County youth sports club funds 6 million yuan. Due to Through inquiry, higher-level units, existence of juvenile sports clubs dont know Chaoyang, juvenile sports clubs dont know Chaoyang specific account, username, account, so County Bureau of finance budget shares has not issued the capital budget. (two) report of rural social undertakings and public service related funds of self-examination and rectification workAgricultural use of project funds: the financial sector arrangement project, cultural station free of special funds, which belongs to the rural social undertakings and public service. I received Finance Bureau file your