[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fB1o7rcqgVmVbg3bGPqvxi3-PqbBt9KYxryL6l8hnuDw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-06-25 15:59:54",155359207,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9e19bd479473540ae7a4a6fe22aea31.png\">受到的安培力方向向左","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9e19bd479473540ae7a4a6fe22aea31.png\">两端的电压始终不变","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9e19bd479473540ae7a4a6fe22aea31.png\">中的电流先变大后变小","整个电路的发热功率保持不变",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},26,"e9709a6d564f3f2dd587b2d1610302ee","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbd4ceb085e7fb614315a0999b89440b7.jpg","大学物理（一）","work_35776340","第15章 坚持\"一国两制\"和推进祖国完全统一","如图所示,一矩形导线框\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff5f307ca9a6b806b15a833b35c033c32.png\">放在匀强磁场中,线框平面与磁场方向垂直,线框材料均匀.有均匀直导线\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9e19bd479473540ae7a4a6fe22aea31.png\">置于\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F28c602bc1949808b96359d13a0e567ba.png\">、\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa422b694d467694a1b486cb094cc8f0c.png\">边上,各导线的电阻不可以忽略.当将导线\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9e19bd479473540ae7a4a6fe22aea31.png\">从\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7008ea92f0613dd9544dbf79e9515630.png\">附近匀速向右移动到\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbf5fafa9fbecce6bb1092dad19ab343f.png\">附近的过程中( ).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F413e60f784853ccf5a4016c542ac245f.jpg\">",[21,33,42,51,60,63,72,81,90,99],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-06-25 15:59:53",155359201,[26,27,28,29],"线圈平面法线沿磁场方向平移","线圈平面法线沿垂直于磁场的方向平移","线圈以自身的直径为轴转动,轴与磁场方向平行","线圈以自身的直径为轴转动,轴与磁场方向垂直","闭合圆形线圈在匀强磁场中运动,在线圈中能产生感应电流的是( )","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],155359202,[37,38,39,40],"把线圈的匝数增加到原来的两倍","把线圈的角速度\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F70e2a28cbb14915c77cf93dafa05d88b.png\">增大到原来的两倍","把线圈切割磁感线的两条边增长到原来的两倍","把线圈的面积增加到原来的两倍,而形状不变","一闭合正方形线圈放在匀强磁场中,绕通过其中心且与一边平行的转轴OO′ 转动,转轴与磁场方向垂直,转动角速度为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F70e2a28cbb14915c77cf93dafa05d88b.png\">.欲使线圈中感应电流的幅值增加到原来的两倍(导线的电阻不能忽略),可以采用的办法是( )",{"answer":43,"createTime":23,"id":44,"options":45,"question":50,"source":31,"type":32},[],155359203,[46,47,48,49],"法拉第首先引入"场"的概念来研究电和磁的现象","法拉第首先引入电场线和磁感线来描述电场和磁场","法拉第首先发现了电流的磁效应现象","法拉第首先发现电磁感应现象并给出了电磁感应定律","法拉第是电磁学的奠基人,下列选项不符合历史事实的是( )",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],155359205,[55,56,57,58],"由于磁通量的变化而产生的电动势叫做感应电动势","感应电流的效果总是反抗引起感应电流的原因","电磁感应所产生的电动势的大小与回路中的电阻成反比","导体回路中感应电动势\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8a9e292beba29d65e7a51918f1f4419a.png\">的大小与穿过回路的磁通量的变化率成正比","下列说法中不正确的是( )",{"answer":61,"createTime":5,"id":6,"options":62,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":31,"type":32},[],155359209,[67,68,69,70],"铜环中有感应电动势,木环中无感应电动势","铜环中感应电动势大,木环中感应电动势小","铜环中感应电动势小,木环中感应电动势大","两环中感应电动势相等","将形状完全相同的铜环和木环静止放置,并使通过两环面的磁通量随时间的变化率相等,则( )",{"answer":73,"createTime":5,"id":74,"options":75,"question":80,"source":31,"type":32},[],155359211,[76,77,78,79],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3f8478efe557f39b34d017b4baee338d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1a4dde6afed97d66344febf208c9c2d5.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F483aaa24ee1b500e691ad47b0692c759.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2594c41871ca8c679147f6c389aaaaff.png\">","如图所示,金属杆\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8c036fa3165823b14b55b07761f4f4f7.png\">以速度\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc3803c6304500810473f01c35c67a63e.png\">在磁感应强度为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F24f1ca0e68eb0d6682f48a8f0e970a92.png\">的匀强磁场中做切割磁感线运动,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb5a271afbd90b0e7e7fde2ab07fb7189.png\">,那么杆的动生电动势为( ).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2a1032d9394e4e0ac43f6adf04d51a7e.png\">",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":31,"type":32},[],155359212,[85,86,87,88],"产生感应电动势,也产生感应电流","不产生感应电动势,也不产生感应电流","不产生感应电动势,产生感应电流","产生感应电动势,不产生感应电流","若用条形磁铁竖直插入木质圆环,则环中将( )",{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":31,"type":32},[],155359214,[94,95,96,97],"磁性起源假说,建立"场"的概念","磁性起源假说,电磁感应","电磁感应,磁性起源假说","电磁感应,建立"场"的概念","法拉第发现了( ),但他对物理学更大的贡献是( ),为此爱因斯坦说,"想象力比知识更重要"",{"answer":100,"createTime":5,"id":101,"options":102,"question":107,"source":31,"type":32},[],155359215,[103,104,105,106],"静电场","涡旋电场","稳恒磁场","变化磁场","在以下矢量场中,属保守力场的是( )"]