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第12章专题强化练213 电磁感应中的电路及图像问题_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练

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第12章专题强化练213 电磁感应中的电路及图像问题_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第12章专题强化练213 电磁感应中的电路及图像问题_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第12章专题强化练213 电磁感应中的电路及图像问题_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第12章专题强化练213 电磁感应中的电路及图像问题_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第12章专题强化练213 电磁感应中的电路及图像问题_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练

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1.如图所示是两个相互连接的金属圆环,小金属环的电阻是大金属环电阻的二分之一,匀强 磁场垂直穿过大金属环所在区域,当磁感应强度随时间均匀变化时,在大环内产生的感应电 动势为E,则a、b两点间的电势差为( ) A.E B.E C.E D.E 2.如图甲所示,在线圈l 中通入电流i 后,在l 上产生的感应电流随时间变化的规律如图 1 1 2 乙所示,l 、l 中电流的正方向如图甲中的箭头所示.则通入线圈 l 中的电流i 随时间t变化 1 2 1 1 的图像是图中的( ) 3.(多选)(2023·广东省华南师大附中模拟)如图所示,在磁感应强度大小为B、方向竖直向下 的匀强磁场中,有两根光滑的平行导轨,间距为L,导轨两端分别接有电阻R 和R ,导体 1 2 棒以某一初速度从ab位置向右运动距离x到达cd位置时,速度为v,产生的电动势为E, 此过程中通过电阻R 、R 的电荷量分别为q 、q.导体棒有电阻,导轨电阻不计.下列关系 1 2 1 2 式中正确的是( ) A.E=BLv B.E=2BLv C.q= D.= 14.(多选)如图甲所示,单匝正方形线框abcd的电阻R=0.5 Ω,边长L=20 cm,匀强磁场垂 直于线框平面向里,磁感应强度的大小随时间变化规律如图乙所示,则下列说法中正确的是 ( ) A.线框中的感应电流沿逆时针方向,大小为2.4×10-2 A B.0~2 s内通过ab边横截面的电荷量为4.8×10-2 C C.3 s时ab边所受安培力的大小为1.44×10-2 N D.0~4 s内线框中产生的焦耳热为1.152×10-3 J 5.在水平光滑绝缘桌面上有一边长为L的正方形线框abcd,被限制在沿ab方向的水平直轨 道上自由滑动.bc边右侧有一正直角三角形匀强磁场区域efg,直角边ge和ef的长也等于 L,磁场方向竖直向下,其俯视图如图所示,线框在水平拉力作用下向右以速度 v匀速穿过 磁场区,若图示位置为t=0时刻,设逆时针方向为电流的正方向.则感应电流 i-t图像正 确的是(时间单位为)( ) 6.(2023·重庆市巴蜀中学高三月考)如图所示,线圈匝数为n,横截面积为S,线圈电阻为R, 处于一个均匀增强的磁场中,磁感应强度随时间的变化率为 k,磁场方向水平向右且与线圈 平面垂直,电容器的电容为C,两个电阻的阻值均为2R.下列说法正确的是( )A.电容器上极板带负电 B.通过线圈的电流大小为 C.电容器所带的电荷量为 D.电容器所带的电荷量为 7.(2023·山东省模拟)如图甲所示,一长为L的导体棒,绕水平圆轨道的圆心O匀速顺时针 转动,角速度为ω,电阻为r,在圆轨道空间存在有界匀强磁场,磁感应强度大小为B.半径 小于的区域内磁场竖直向上,半径大于的区域内磁场竖直向下,俯视图如图乙所示,导线一 端Q与圆心O相连,另一端P与圆轨道连接给电阻R供电,其余电阻不计,则( ) A.电阻R两端的电压为 B.电阻R中的电流方向向上 C.电阻R中的电流大小为 D.导体棒的安培力做功的功率为0 8.(多选)如图,PAQ为一段固定于水平面上的光滑圆弧导轨,圆弧的圆心为 O,半径为L.空 间存在垂直导轨平面、磁感应强度大小为B的匀强磁场.电阻为R的金属杆OA与导轨接触 良好,图中电阻R =R =R,其余电阻不计.现使OA杆在外力作用下以恒定角速度ω绕圆 1 2 心O顺时针转动,在其转过的过程中,下列说法正确的是( ) A.流过电阻R 的电流方向为P→R→O 1 1 B.A、O两点间电势差为 C.流过OA的电荷量为 D.外力做的功为 9.(多选)(2019·全国卷Ⅱ·21)如图,两条光滑平行金属导轨固定,所在平面与水平面夹角为 θ,导轨电阻忽略不计.虚线ab、cd均与导轨垂直,在ab与cd之间的区域存在垂直于导轨 所在平面的匀强磁场.将两根相同的导体棒PQ、MN先后自导轨上同一位置由静止释放, 两者始终与导轨垂直且接触良好.已知PQ进入磁场时加速度恰好为零.从PQ进入磁场开 始计时,到MN离开磁场区域为止,流过PQ的电流随时间变化的图像可能正确的是( )10.如图甲所示,虚线MN左、右两侧的空间均存在与纸面垂直的匀强磁场,右侧匀强磁场 的方向垂直纸面向外,磁感应强度大小恒为B ;左侧匀强磁场的磁感应强度B随时间t变化 0 的规律如图乙所示,规定垂直纸面向外为磁场的正方向.一硬质细导线的电阻率为 ρ、横截 面积为S,将该导线做成半径为r的圆环固定在纸面内,圆心O在MN上.求: 0 (1)t=时,圆环受到的安培力; (2)在0~t 内,通过圆环的电荷量. 0 11.如图所示,光滑的足够长的平行水平金属导轨 MN、PQ相距l,在M、P和N、Q间各 连接一个额定电压为U、阻值恒为R的灯泡L、L,在两导轨间cdfe矩形区域内有垂直导轨 1 2 平面竖直向上、宽为d 的有界匀强磁场,磁感应强度为B ,且磁场区域可以移动,一电阻 0 0 也为R、长度大小也刚好为l的导体棒ab垂直固定在磁场左边的导轨上,离灯泡 L 足够远. 1 现让匀强磁场在导轨间以某一恒定速度向左移动,当棒ab刚处于磁场时两灯泡恰好正常工 作.棒ab与导轨始终保持良好接触,导轨电阻不计. (1)求磁场移动的速度大小; (2)若保持磁场不移动(仍在cdfe矩形区域),而使磁感应强度B随时间t均匀变化,两灯泡中 有一灯泡正常工作且都有电流通过,设t=0时,磁感应强度为B.试求出经过时间t时磁感 0 应强度的可能值B. t
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  1. CONNECT:[ UseTime:0.001015s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001501s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001621s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000668s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001406s ]
  6. SELECT * FROM `set` [ RunTime:0.000600s ]
  7. SHOW FULL COLUMNS FROM `wendang` [ RunTime:0.001508s ]
  8. SELECT * FROM `wendang` WHERE `id` = 373619 LIMIT 1 [ RunTime:0.000999s ]
  9. UPDATE `wendang` SET `liulancishu` = 1 WHERE `id` = 373619 [ RunTime:0.002291s ]
  10. UPDATE `wendang` SET `lasttime` = 1773119580 WHERE `id` = 373619 [ RunTime:0.001100s ]
  11. SELECT * FROM `wendang` WHERE `id` < 373619 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001055s ]
  12. SELECT * FROM `wendang` WHERE `id` > 373619 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002352s ]
  13. SELECT * FROM `wendang` WHERE `id` <> 373619 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002328s ]
  14. SELECT * FROM `wendang` WHERE `id` <> 373619 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002930s ]
  15. SELECT * FROM `wendang` WHERE `id` <> 373619 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004008s ]
0.189337s