[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fXEZikkhnXE1LQAWxI9jAAJ1Saq4MTnNd914OH6af62c":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":26,"type":97},[],"2024-12-18 22:55:41",172183192,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},23,"fcd52b619bbf386970ed61577ad67d0c","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb184d3934bf7281f11c4ee5f1936e81a.jpg","电磁场与电磁波","work_38821156","2024课程目标一模拟测试","设同轴线的内导体半径为a,外导体半径b,内外导体间填充电导率为σ的导电媒质,如图所示,求同轴线单位长度的漏电导.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F82be8905df533fd0d98769bea1ee67e1.png\">",[17,28,37,46,55,63,72,81,87,92],{"answer":18,"createTime":5,"id":19,"options":20,"question":25,"source":26,"type":27},[],172183174,[21,22,23,24],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F95fee90dea085df1d5427fa6ca57ba66.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5d269f8ff744b44d6c148ea5d4a7de53.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe4b524e2892e90cbee1dd200be878917.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa9802ecd9b0e90afe0528f129110f88a.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fab7229bf4d189f443761a28e67969418.png\">","v1",0,{"answer":29,"createTime":5,"id":30,"options":31,"question":36,"source":26,"type":27},[],172183175,[32,33,34,35],"-2","2","0","2z","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff5ec2445862d06765d54a749dc23b551.png\">",{"answer":38,"createTime":5,"id":39,"options":40,"question":45,"source":26,"type":27},[],172183176,[41,42,43,44],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdebbc968e37f1364a7d6eb3de976e766.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5f7107b9106d0eefe7d8f63fe335c45f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3699f2308ada4dcb8df1456b3b8fe5ee.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6ddc30d4cad69f27e025e27548a99374.png\">","同心球壳电容器,内外导体带电荷量分别为Q和-Q,内外导体之间充满两种均匀电介质,内层为介质1 ,外层为介质2 .分界面是以R1为半径的球面.则在介质分界面上有",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":26,"type":27},[],172183177,[50,51,52,53],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F44ab264dea912b09f3b8a569ff002698.png\">增强","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd02676a1eddb97f1f3fcfad7d13cc175.png\">减弱","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8227ee168edc2aa52ac43e93a78c356e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbf281d412b0a2980bd5dde26c62e9768.png\">","如果所研究的区域中存在介质和导体的分界面,则在分界面上切向电磁场边界条件为",{"answer":56,"createTime":5,"id":57,"options":58,"question":62,"source":26,"type":27},[],172183178,[59,60,61,59],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe7bb345078af20d9f0fcea707d40b781.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Facabceea25e2885011431858cef9b15c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3ab0769bf01a445128aaad2069af1533.png\">","斯托克斯定理的表达式为( )",{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":26,"type":27},[],172183179,[67,68,69,70],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c31558fc694901cc56c07f63e38ac2e.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7e66d48d5c85c7149101f4f8447dd88b.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8dcdcaeabcb334f216f4f379c0a93af7.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F33b062fb11537fc36c048b43b9b28408.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe5fb565a23de618b9111c87b021e16f9.webp\">",{"answer":73,"createTime":5,"id":74,"options":75,"question":80,"source":26,"type":27},[],172183180,[76,77,78,79],"最大环量,取得最大环量的环面的法线方向","环量密度,环面的法线方向","最大环量密度,取得最大环量的环面的切线方向","最大环量密度,取得最大环量的环面的法线方向","矢量场中某点的旋度是一个矢量,其大小等于该点的(),其方向为()",{"answer":82,"createTime":5,"id":83,"options":84,"question":85,"source":26,"type":86},[],172183181,[],"静电场中微分形式的高斯定理描述了一点处的电场强度的 和该点电荷密度的关系,尽管该点的电场强度是有空间的所有电荷激发的,可是这一点电场强度的散度仅仅取决于该点的电荷密度,而与其它电荷无关.微分形式的高斯定理可以用来从 研究",2,{"answer":88,"createTime":5,"id":89,"options":90,"question":91,"source":26,"type":86},[],172183182,[],"亥姆霍兹定理也称为矢量场的唯一性定理,即在无界空间区域,矢量场可由其散度和旋度唯一确定.矢量场的散度是一个 函数,它表示矢量场中某点的 ;矢量场的旋度是一个 函数,它表示矢量场中某点的 ,是矢量场中某点涡旋源强度的度量",{"answer":93,"createTime":5,"id":94,"options":95,"question":96,"source":26,"type":86},[],172183183,[],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25d4ec041d34a5ee2311e22f76768c63.png\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F905dec06792e7e8f10335f34169b519b.png\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F761038132a4f74ca3db26c42aba9654c.png\">则电介质中的电场强度为",4]