[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fTaARpcycxW2iVz_nnx61yAK89nJZLlZ6k-CnC9a5Wmc":3},{"id":4,"source":5,"question":6,"options":7,"answer":12,"related":13,"type":122,"origin":123,"createTime":58},103399428,"v1","关于磁感应强度,正确的说法是",[8,9,10,11],"磁感强度是矢量,方向与通过该点的磁感线的切线方向相同","根据定义式B=F\u002FIL,磁场中某点的磁感强度B与F成正比,与IL成反比","磁感强度是矢量,方向与F的方向相同","在确定的磁场中,同一点的磁感强度是确定的,不同点的磁感强度可能不同,磁感线密的地方磁感强度大些,磁感线疏的地方磁感强度小些",[],[14,27,38,48,59,69,79,90,100,111],{"id":15,"source":5,"question":16,"options":17,"answer":22,"related":23,"type":24,"origin":25,"createTime":26},100529791,"有人根据公式B=F\u002FIL提出以下看法,其中正确的是",[18,19,20,21],"磁感应强度是表示磁场强弱的物理量,它是客观存在的,它与外加导线的长度、电流的强弱和受力情况均无关","磁感应强度的数值跟通电导线受到的磁场力F的大小成正比","磁感应强度的数值跟通电导线的长度L成反比","磁感应强度的数值跟通电导线的电流I成反比",[],[],0,null,"2023-10-29T17:54:52+08:00",{"id":28,"source":5,"question":29,"options":30,"answer":35,"related":36,"type":24,"origin":25,"createTime":37},100529794,"\u003Cimg src=\"http:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F2956f01699fc2d759913d5455062e32e.png\">一个半径为r 的半球面如图放在均匀磁场中,通过半球面的磁通量为( )",[31,32,33,34],"-\u003Cimg src=\"\u002Fananas\u002Flatex\u002Fp\u002F88603\">","\u003Cimg src=\"\u002Fananas\u002Flatex\u002Fp\u002F429189\">","\u003Cimg src=\"\u002Fananas\u002Flatex\u002Fp\u002F40785\">","\u003Cimg src=\"\u002Fananas\u002Flatex\u002Fp\u002F40784\">",[],[],"2023-11-16T03:18:38+08:00",{"id":39,"source":5,"question":40,"options":41,"answer":45,"related":46,"type":24,"origin":25,"createTime":47},100529795,"均匀磁场的磁感强度垂直于半径为r的圆面.今以该圆周为边线,作一半球面S,则通过S面的磁通量的大小为",[42,43,34,44],"无法确定的量","0","πr2B",[],[],"2023-10-18T19:09:17+08:00",{"id":49,"source":5,"question":50,"options":51,"answer":56,"related":57,"type":24,"origin":25,"createTime":58},100529797,"如图3所示,在无限长载流直导线附近做一个球形闭合曲面\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fabe69d9d45af0d9da784ce6d91b72771.png\">,当球面\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fabe69d9d45af0d9da784ce6d91b72771.png\">向着长直导线靠近时,穿过球面\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fabe69d9d45af0d9da784ce6d91b72771.png\">的磁通量\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F85fc29039301abfdd6d3566f3c36123b.png\">和面上各点的磁感应强度\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5931c457fbb8dda8474c739ef294f33b.png\">的大小将 【 】\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3c14cc99a2a1f10c8e164278d348b993.png\">",[52,53,54,55],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F85fc29039301abfdd6d3566f3c36123b.png\">、\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5931c457fbb8dda8474c739ef294f33b.png\">均不变","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F85fc29039301abfdd6d3566f3c36123b.png\">、\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5931c457fbb8dda8474c739ef294f33b.png\">均增大","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F85fc29039301abfdd6d3566f3c36123b.png\">增大,\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5931c457fbb8dda8474c739ef294f33b.png\">不变","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F85fc29039301abfdd6d3566f3c36123b.png\">不变,\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5931c457fbb8dda8474c739ef294f33b.png\">增大",[],[],"2023-11-06T00:14:38+08:00",{"id":60,"source":5,"question":61,"options":62,"answer":67,"related":68,"type":24,"origin":25,"createTime":26},100529799,"有一个圆形回路1及一个正方形回路2,圆直径和正方形的边长相等,二者中通有大小相等的电流,它们在各自中心产生的磁感强度的大小之比\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F7dd67ca1dec8ea8930aedb6fdba0efab.png\">为 【 】",[63,64,65,66],"0.90","1.00","1.11","1.22",[],[],{"id":70,"source":5,"question":71,"options":72,"answer":77,"related":78,"type":24,"origin":25,"createTime":58},100529802,"如图所示,一无限长载流导线中部弯成四分之一圆周 MN,圆心为 O, 半径为 R .若导线中的电流强度为\u003Cimg src=\"\u002Fananas\u002Flatex\u002Fp\u002F2342\"> ,则O处的磁感应强度的大小为( ) \u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F64edd9f13fb19d387e0a3df90a14adfd.png\">",[73,74,75,76],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F0d39e55fb63e50635d388bf57db31eda.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3a106321033bf01843d351b667071eff.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fe86ef3e731b3ed948c9a42253d649905.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F9dd7f0223e4ad6ad2bb6d4bb14e9d763.png\">",[],[],{"id":80,"source":5,"question":81,"options":82,"answer":87,"related":88,"type":24,"origin":25,"createTime":89},100529804,"关于磁感应强度的方向,下列方法不正确的是",[83,84,85,86],"小磁针N极的受力方向","小磁针静止时S极所指的方向","小磁针静止时N极所指的方向","同磁场方向一致",[],[],"2023-11-16T05:49:42+08:00",{"id":91,"source":5,"question":92,"options":93,"answer":98,"related":99,"type":24,"origin":25,"createTime":89},100529805,"如图,正方形线圈abcd的一半处于匀强磁场中,线圈平面与磁场方向垂直.在线圈以ab为轴转动90°的过程中,穿过线圈的磁通量大小 \u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc1b948ca11c6c23e60bd2c6cd841e21f.png\">",[94,95,96,97],"先不变后减小","一直减小","先增大后减小","先减小后增大",[],[],{"id":101,"source":5,"question":102,"options":103,"answer":108,"related":109,"type":24,"origin":25,"createTime":110},100529807,"两根长度相同的细导线分别密绕在半径为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F214a794994514bb1a09d6f63f60805de.png\">和\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb367925eafeb5206d9c82e9bc0c8a0eb.png\">的两个长直圆筒上形成两个螺线管,两个螺线管的长度相同,\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fba855da5fc75e0a3844a07b7f53049f2.png\">,螺线管通过的电流均为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb30220d87caec94074a056259ff685a0.png\">,则螺线管中的磁感应强度\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fd5beec814fb658be29df9c4ef1274745.png\">、\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F7e981a1529e8ee49750e3cfa8688fd8b.png\">满足【 】",[104,105,106,107],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F06e06615051213d452e0d06e1b6df9b8.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F651122bcfdd5e25efef3e48140551533.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fa93acf539a48180ef772da59411d73bb.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F1844b2b7bdcc275e84d18c32bfddedb3.png\">",[],[],"2023-11-16T03:18:39+08:00",{"id":112,"source":5,"question":113,"options":114,"answer":119,"related":120,"type":24,"origin":25,"createTime":121},100529809,"边长为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fff210b8b0b0982f22e612065d703c627.png\"> 的正方形的四个角上固定有四个电量均为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fa2b217185ba1ddbb85af5210ab631867.png\">的的点电荷.此正方形以角速度\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F077ba1e935e6bea8fb899f45e31c03f2.png\">绕其对角线旋转时,在正方形中心\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3bda9f74e94d14b7fb2b2106c483ee80.png\">点产生的磁感强度大小为 【 】",[115,116,117,118],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fcbbd04ac4da76a570767e2fe50186a5b.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F31c6f15412ca60744fec9b7360a17109.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc029364b74c3b7cea3b6931f57c61de3.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ff6344c448bffca092454fbff82d12c98.png\">",[],[],"2023-10-18T19:40:59+08:00",1,{"courseName":124,"courseImg":125,"workName":126,"workId":127,"count":128,"courseId":129},"大学物理（下）","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F71366f857481918a9ba317f9c0a555f1.jpg","试题编号:T-13-4,JC公司员工录用","work_29945088",54,"f449e35fa690db4028ec2b508b6be9d4"]