[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fAjsFx0yx7Ej2HE4VXiQ8DXbTVAclmTb_gfiBfkR84ck":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2025-12-23 11:56:04",282243103,[8,9,10,11],"7.8×10-3V","3.1×10-2V","8.0V","12.0V",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","自感为0.25H的线圈中,当电流在(1\u002F16)s内由2A均匀减小到零时,线圈中自感电动势的大小为",[18,29,32,41,50,59,68,76,81,86],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],282243102,[22,23,24,25],"线圈绕自身直径轴转动,轴与磁场方向平行","线圈绕自身直径轴转动,轴与磁场方向垂直","线圈平面垂直于磁场并沿垂直磁场方向平移","线圈平面平行于磁场并沿垂直磁场方向平移","一导体圆线圈在均匀磁场中运动,能使其中产生感应电流的一种情况是","v1",0,{"answer":30,"createTime":5,"id":6,"options":31,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":27,"type":28},[],282243104,[36,37,38,39],"变大,与电流成反比关系","变小","不变","变大,但与电流不成反比关系","对于单匝线圈取自感系数的定义式为L=F \u002FI.当线圈的几何形状、大小及周围磁介质分布不变,且无铁磁性物质时,若线圈中的电流强度变小,则线圈的自感系数L",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":27,"type":28},[],282243105,[45,46,47,48],"只适用于无限长密绕螺线管","只适用于单匝圆线圈","只适用于一个匝数很多,且密绕的螺绕环","适用于自感系数L一定的任意线圈","用线圈的自感系数L来表示载流线圈磁场能量的公式\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fba3038d5e11519ba133881465f6575a0.png\">",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":27,"type":28},[],282243106,[54,55,56,57],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb28abe830be8d7a106a1bbd0b857df06.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0274623b4b13889a9b36ea7b1be3c319.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F24b7d7f54baa93a368dce3c02130d918.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F125093c942f1441e46c6221ed99b37a7.png\">","真空中一根无限长直细导线上通电流I,则距导线垂直距离为a的空间某点处的磁能密度为",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":27,"type":28},[],282243107,[63,64,65,66],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd367fb3433bd389c963f94c4d307b377.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbeea5600faefa3463c7b810423bfcbe8.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4c60d9c3d33bad4876f130d356c07e38.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F78bb60c2612e73184153d9d40efde4a7.png\">","有一长为l截面积为A的载流长螺线管绕有N匝线圈,设电流为I,则螺线管内的磁场能量近似为",{"answer":69,"createTime":5,"id":70,"options":71,"question":74,"source":27,"type":75},[],282243108,[72,73],"正确","错误","线圈处于均匀磁场中,均匀磁场与线圈平面垂直.该线圈保持周长不变,当它由圆形变为椭圆形过程中,线圈中不产生感应电动势",3,{"answer":77,"createTime":5,"id":78,"options":79,"question":80,"source":27,"type":75},[],282243109,[72,73],"产生动生电势的非静电力是洛仑兹力",{"answer":82,"createTime":5,"id":83,"options":84,"question":85,"source":27,"type":75},[],282243110,[72,73],"当导体在磁场中运动而产生感应电流时,该电流受到的磁力总表现为导体运动的阻力",{"answer":87,"createTime":5,"id":88,"options":89,"question":90,"source":27,"type":75},[],282243111,[72,73],"根据定义自感\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc5738c8e44b9dbf8e6280d584913a4a9.png\">,所以,通过线圈的电流越小,自感就越大"]