2022年新人教版高考物理第十三章交变电流电磁场电磁波综合检测一复习 .pdf

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1、第十三章交变电流电磁场电磁波（A卷）一、本题共 12 小题，每小题 4 分，共 48 分，在每小题给出的四个选项中，有的小题只有一个选项正确，有的小题有多个选项正确，全部选对得 4 分，选不全的得 2 分，有选错或不答的得0 分.1.在如图所示的电路，已知交流电源电压u=200sin100t V，电阻 R=10 0，则电流表和电压表的读数分别为（）A.1.41 A，200 V B.1.41 A，141 V C.2 A，200 V D.2 A，141 V 解析：交流电流表和交流电压表的读数是交流电的有效值.由 u=200sin100tV知 Um=200 V，得电压表读数 U=mU2=141 V，

2、电流表读数 I=UR=1.41 A.答案：B 2.一理想变压器、原副线圈的匝数比是10：1，原线圈接入电压为 220 V的正弦交流电源.一只理想二极管和一个阻值为10 的电阻串联接在副线圈上，交流电流表测原线圈中的电流，交流电压表测电阻两端的电压，如图所示，则以下说法中正确的是()A.交流电压表的读数为22 V B.1 分钟内电阻 R上产生的热量为 1 452 J C.二极管两端的最大电压为22 V D.增大电阻 R的值，交流电流表读数减小文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7

3、Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H

4、7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2

5、X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10

6、G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL

7、6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7

8、H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L

9、10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7解析：由理想变压器的电压比等于匝数比可得到副线圈两端电压为 22V，这是电压的有效值.由于二极管的单向导电性，只限于正向电压能通过二极管，由有效值的定义可求出通过二极管后的电压的有效值为 112V,故交流电压表的读数也为112V，由 Q=2UtR得到 1 分钟内电阻 R上产生的热量为 1 452 J.加负向电压时，二极管处于截止状态，R 中没有电流，此时二极管两端的电压等于副线圈两端的电压，故二极管两端的最大电压为2

10、22V.增大电阻R，副线圈中的电流变小，则原线圈中的电流也变小，故电流表读数变小.选项 BD正确.答案：BD 3.下列说法中，正确的是（）A.任何变化的磁场都要在周围空间产生变化的电场，振荡磁场在周围空间产生同频率的振荡电场B.任何电场都要在周围空间产生磁场，振荡电场在周围空间产生同频率的振荡磁场C.任何变化电场都要在周围空间产生磁场，振荡电场在周围空间产生同频率的振荡磁场D.电场和磁场总是相互联系着，形成一个不可分离的统一体，即电磁场文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9

11、R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S

12、4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8

13、K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7

14、Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H

15、7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2

16、X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10

17、G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7解析：根据麦克斯韦电磁场理论可知，恒定的电场（或磁场）周围不产生磁场（或电场）；均匀变化的电场（磁场）周围产生恒定的磁场（电场）；而周期性变化的电场（磁场）周围产生同频率变化的磁场（电场），所以 A、B项错，C项正确；变化的电场和变化的磁场总是互相联系着，形成电磁场，故D项错误.答案：C 4.一矩形线圈，绕垂直于匀强磁场并位于线圈平面内固定轴转动，线圈中的感应电动势e 随时间 t 的变化情况如图所示，下列说法正确的是（）

18、A.t1时刻通过线圈磁通量最大B.t2时刻通过线圈磁通量的绝对值最大文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7

19、H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L

20、10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:

21、CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 H

22、E7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ

23、5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编

24、码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7C.t3时刻通过线圈的磁通量变化率的绝对值最大D.每当 e 变换方向，通过线圈的磁通量最小解析：从矩形线圈在匀强磁场中匀速转动产生交流电的模型可知，通过线圈磁通量为零时，磁通量的变化率最大，产生的

25、交变电动势最大.而线圈平面与中性面重合时，通过线圈的磁通量最大，磁通量的变化率最小，产生的交变电动势为零，所以从图中的曲线可知：t1时刻 e 为 0，则此时通过线圈的磁通量最大；t2时刻 e 最大，则此时通过线圈的磁通量为0；t3时刻 e 为 0，则此时通过线圈的磁通量最大，而磁通量的变化率为零；从图中曲线的走向，t1与 t3时刻是 e 变换方向的时刻，此时交变电动势e 为零，穿过线圈的磁通量都为最大，故 A正确.答案：A 5.如图所示，T 为理想变压器，A1、A2为理想交流电流表，V1、V2为理想交流电压表，R1、R2、R3为电阻，原线圈两端接电压一定的正弦交流电，当开关 S闭合时，各交流表

26、的示数变化情况应是（）文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档

27、编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K

28、4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2

29、 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7

30、文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z

31、9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9

32、J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7A.电压表 V1读数变小B.电压表 V2读数变大C.电流表 A1读数变大D.电流表 A2读数变小解析：闭合开关 S后，由于输入电压不变，输出电压也不变，负载电阻减小，A2读数变大，A1读数随之变大，故C 正确，D 错误.U2=U1-I2R1，

33、U1不变，I2变大，U2变小，即 V2读数减小，故 A、B 错误.答案：C 6.两个相同的白炽灯泡L1和 L2接到如图所示的电路中，灯 L1与电容器串联，灯 L2与电感线圈串联.当 a、b 间接电压最大值为Um、频率为 f的正弦交流电源时，两灯都发光，且亮度相同.更换一个新的正文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z

34、9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7

35、S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X

36、8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G

37、7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6

38、H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H

39、2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L1

40、0G7Z9R7弦交流电源后，灯L1的亮度低于灯L2的亮度.新电源两极的电压最大值和频率可能是()A.最大值仍为 Um，而频率大于 f B.最大值仍为 Um，而频率小于 f C.最大值大于 Um，而频率仍为 f D.最大值小于 Um，而频率仍为 f 解析：更换新电源后，灯 L1的亮度低于灯 L2的亮度，说明电容器的容抗增大，电感的感抗减小.根据频率对容抗、感抗的影响可知新电源频率减小.所以正确选项是 B.答案：B 7.如图所示，把电阻R、电感线圈 L、电容器 C分别串联一个灯文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7

41、H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L

42、10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:

43、CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 H

44、E7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ

45、5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编

46、码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4

47、 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7泡后并联在电路中.接入交流电源后，三盏灯亮度相同.若保持交流电源的电压不变，使交变电流的频率减小，则下列判断正确的是()A.灯泡 L1将变暗 B.灯泡 L2将变暗C.灯泡 L3将变暗 D.灯泡亮度都不变解析：保持交流电源的电压不变，使交变电流的频率减小，电感L 的感抗减小，灯泡L1变亮，电容器 C的容抗增大，灯泡L2变暗，电阻 R不变，灯泡 L3亮度不变.答案：B 8.某电站向远处输

48、送一定功率的电能，则下列说法中正确的是（）A.输电线不变，将送电电压升高到原来的10 倍时，输电线损耗的功率减为原来的1/10 文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ

49、5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编

50、码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4 HE7H2X8K9J2 ZJ5L10G7Z9R7文档编码:CL6H7S4Z9K4