[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fXHAPMDq6v-RKmSvu2MR-vMmx2dS0mbjz6azfu1WYOmc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-06-20 22:31:18",184162806,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Feb9c42ed8b24e5733ab4143c96f44ba2.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F325955398671a6b5dcf528817996d4f8.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F92f98f6c2748d3bbe81f2edf37d47d34.png\">","V=0",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"00ab116a2165664f6209b1293d137f5a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F91606f9768d5808a7bda837639dadf26.jpg","医用物理学","6e1f69394dde4604bfed833459cac67e","线上实验2作业","三个点电荷 q1=+Q、q2=−Q 和 q3=+Q 分别位于边长为a的等边三角形的三个顶点上.在三角形的中心点,电势为( )",[21,32,42,51,59,68,77,86,95,104],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],184162797,[25,26,27,28],"库仑定律适用于所有介质中的点电荷之间的相互作用力","库仑定律适用于任何形状的带电体之间的相互作用力计算","库仑定律适用于任意距离的点电荷之间的相互作用力","库仑定律只适用于真空中的点电荷之间的相互作用力","关于库仑定律的适用条件,以下说法正确的是( )","v1",0,{"answer":33,"createTime":34,"id":35,"options":36,"question":41,"source":30,"type":31},[],"2025-06-20 22:28:12",184162798,[37,38,39,40],"2F","4F","8F","16F","两个相同的金属小球 A 和 B,分别带有等量的同种电荷 q,它们之间的距离为 r.根据库仑定律,它们之间的相互作用力为 F.如果将其中一个金属球的电荷量加倍,同时将它们之间的距离减半,那么新的相互作用力 F′ 为( )",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":30,"type":31},[],184162799,[46,47,48,49],"F\u002F3","F\u002F9","F\u002F81","F\u002F27","两个点电荷 q1 和 q2 在真空中相距 r,它们之间的相互作用力为 F.如果将其中一个电荷的电荷量变为原来的1\u002F3,同时将它们之间的距离变为原来的 3 倍,那么新的相互作用力 F′ 为( )",{"answer":52,"createTime":5,"id":53,"options":54,"question":58,"source":30,"type":31},[],184162800,[37,55,56,57],"根号2倍F","F\u002F2","F","在真空中有两个点电荷 q1 和 q2,它们之间的相互作用力为 F.如果将其中一个电荷的电荷量变为原来的 2 倍,同时将它们之间的距离变为原来的根号2倍,那么新的相互作用力 F′ 为( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],184162801,[63,64,65,66],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F53ca0b87092986e01ae462b3c079bb3e.png\">","E=0,V=0","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2581b781f85db6bd2b49e34b5f1eccfa.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F873247dbe6d693f5a7da065e39cf7664.png\">","两个点电荷 q1 和 q2 分别带有电荷量 +Q 和 −Q,它们相距 d.在它们连线的中点处,电场强度和电势分别为( )",{"answer":69,"createTime":70,"id":71,"options":72,"question":76,"source":30,"type":31},[],"2025-04-22 20:06:02",184162802,[64,73,74,75],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb7c05cc295c4f5df2e40d0f0449477dd.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffd17c3230cb4ad4961c8e8c0a1e200a2.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0123e83328c8600b113ec076fdd2f518.png\">","两个点电荷 q1 和 q2 分别带有电荷量 +Q 和 +Q,它们相距 d.在它们连线的中点处,电场强度和电势分别为( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":30,"type":31},[],184162803,[81,82,83,84],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F59cb9a1a99516335612679ef920f1e20.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F31de453870a18601d74b8fb4ec311297.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0507bd7f41ccab9113d5ddf2b3bc5eff.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2f489d60604df51ce93e94f52f8bbe73.png\">","一个点电荷 q 在真空中产生的电场强度 E 和电势 V 随距离 r 的变化规律是( )",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":30,"type":31},[],184162804,[90,91,92,93],"V′=V\u002F4","V′=2V","V′=V","V′=V\u002F2","在一个点电荷 q 的电场中,某点的电势为 V.如果将该点电荷的电荷量加倍,同时将测量点的距离加倍,那么新的电势 V′ 为( )",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":30,"type":31},[],184162805,[99,100,101,102],"沿连线方向,指向 q1","垂直于中垂线,指向连线中点","沿连线方向,指向 q2","垂直于中垂线,指向-q一侧","两个点电荷 q1=+Q 和 q2=−Q 相距 d.在它们连线的中垂线上距离连线中点 r 处的某点,电场强度的方向是( )",{"answer":105,"createTime":5,"id":6,"options":106,"question":19,"source":30,"type":31},[],[8,9,10,11]]