[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgPpMocCg_Y1WqxOUvt1HoclHF8iuLdnxRPW2yq7x2wQ":3},{"id":4,"source":5,"question":6,"options":7,"answer":12,"related":13,"type":24,"origin":111,"createTime":60},103363977,"v1","如图所示,一内外半径分别为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F43da86b3c016fe5d1930f1715f1a2c54.png\">和\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb608abe42c61aab9e211894cd7c42409.png\">的金属圆筒,长度\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F1b734ee5ba07f587fb60def630e61eb4.png\">,其电阻率\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F05633331fb75d51e5967d3dc3fea4afe.png\"> ,若筒内外电势差为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fcab4ee230603a370be5469140ea42590.png\">,且筒内缘电势高,圆柱体中径向的电流强度等于( )\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F8c52834dd6812a6777c11bb6a44bd160.jpg\">",[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F9feba256d72f494f9097ed17732207b1.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb152af084eb32d1ef11413c1bf2e6b37.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fed2f9fd9089a31d93581c99e99424cbd.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F27851deebf3f1c1afd8364be5569a7cf.png\">",[],[14,27,37,46,56,61,71,81,91,101],{"id":15,"source":5,"question":16,"options":17,"answer":22,"related":23,"type":24,"origin":25,"createTime":26},103363970,"如图所示,两段截面积不同、材料相同的金属导体串联在电路中,则下列说法正确的是:( )\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5e4f0c84cf2a800520459fe99994ae77.png\">",[18,19,20,21],"两段导体中电流密度相同","两段导体中电流强度相同","两段导体中的电场强度相同","以上说法都不正确",[],[],0,null,"2023-11-05T23:15:12+08:00",{"id":28,"source":5,"question":29,"options":30,"answer":35,"related":36,"type":24,"origin":25,"createTime":26},103363971,"北京正负电子对撞机的储存环是周长为240m的近似圆形轨道,求当环中电子电流强度为8mA时,已知电子的速率接近光速,则在整个环中有多少个电子在运行:( )",[31,32,33,34],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ff4a67f5b6d890506650f7b97e5c81327.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F11b140deeaa7c60830c981dfbded178f.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F53df6bdb6792c286dd8ce9686893712a.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F940c690262619c72ccd754332b8c135f.png\">",[],[],{"id":38,"source":5,"question":39,"options":40,"answer":44,"related":45,"type":24,"origin":25,"createTime":26},103363973,"一用恒定电阻率为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ffec7e0b10e14c613eccaeede4bf7a909.png\">的材料制成的空心半球壳,其内半径为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F35df0db2cfa3ef643a724484fcb4038d.png\">,外半径为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F45680269179d353447926f8326332c7b.png\">,则该半球壳内外表面之间的电阻R等于( )",[41,42,43],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ff740531f4b7e95a55d3d34c38c926c27.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ff7e6684b2fcf8498da23ebbad00eb541.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F1ed618c627ccd78e79f5f27cee74a045.png\"> B.\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F1f2fa53c2d13cf19135194d4754a185f.png\">",[],[],{"id":47,"source":5,"question":48,"options":49,"answer":54,"related":55,"type":24,"origin":25,"createTime":26},103363975,"大气中由于存在少量的自由电子和正离子而具有微弱的导电性,晴天时,地表面附近大气的平均电场强度约为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc8d6be749a09f29db3a79b3a88267f9b.png\">,大气中的平均电流密度约为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fbecdc20c48ea1032eb13c9b970ad2705.png\">,则大气的电阻率\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fa7fe7a6e50b1db6908a20bb1622e94c9.png\">等于( )",[50,51,52,53],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F2b5630a3639f2e6e17d3037e231d7eda.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F66d69b1dfa8cea838695bec683dbbb17.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fe1340e836cfbaec569ea5f8b445ccbdd.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F302b969c329750f85cf826f9cf3d98fc.png\">",[],[],{"id":4,"source":5,"question":6,"options":57,"answer":58,"related":59,"type":24,"origin":25,"createTime":60},[8,9,10,11],[],[],"2023-11-05T23:15:13+08:00",{"id":62,"source":5,"question":63,"options":64,"answer":69,"related":70,"type":24,"origin":25,"createTime":60},103363979,"一铜导线横截面积为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb3fef8d91e7b056b0ea79fc4a5ed32df.png\">,20 s内有80 C的电量通过该导线的某一横截面,已知铜内自由电子的数密度为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F2de5a3a2d25e87624a3c5a7da11160fc.png\">,每个电子的电量为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3c03edbca3220ba07079eb4405b1f32d.png\">,则电子的平均定向漂移速率\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F4e6b9112cac63e8311b38d929ea8bb9f.png\">等于( )",[65,66,67,68],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F2d1f20c181c23c1a27b44dc0a44b6f33.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ff31b2491022a4f150c6a8340a37b9eaf.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F9774191b30963e1dd04e70aa0be81656.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5d4584324daf2589bdb84128d9fd9468.png\">",[],[],{"id":72,"source":5,"question":73,"options":74,"answer":79,"related":80,"type":24,"origin":25,"createTime":60},103363982,"如图所示,一用电阻率为 r 的材料制成的圆台,其高为l,两端面的半径分别为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F28735f8c4cabe7e9a53c0c8619e8b341.png\">和\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ffad07193bad0511854d963b37aaca19e.png\">,则此圆台两端面之间的电阻等于( )\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F322d48da7e74b2f5f3c62c11ec2fd32a.png\">",[75,76,77,78],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F02db31e251f284c4e8338386892bf7fb.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5da3bb63f471ccde9413d06e5a691705.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F35cd1fe987d3203a23366c5fabd1e9eb.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F5e3ccef56a27fde820b81f3f26878455.png\">",[],[],{"id":82,"source":5,"question":83,"options":84,"answer":89,"related":90,"type":24,"origin":25,"createTime":60},103363983,"通有电流I的无限长直导线弯成如图所示的三种形状,则P、Q、O各点磁感应强度的大小BP、BQ、BO间的关系为( ).\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F4137cc193177b4c9d1a6e30bc8022502.png\">",[85,86,87,88],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fe8a341fbc5cef861808fe84346604467.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fd74b1317dcd9ab4cda3353173754a69b.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F8adb7aa1bc53d823320d0c5f52714573.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F4acd3b345210ea8e665c80b4cd340646.png\">",[],[],{"id":92,"source":5,"question":93,"options":94,"answer":99,"related":100,"type":24,"origin":25,"createTime":60},103363984,"四条相互平行的载流长直导线电流强度均为I,如图示放置.设正方形的边长为2a,则正方形中心的磁感应强度大小为( ).\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb00a3aaf614467e7701e5ece042bc5fd.png\">",[95,96,97,98],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F11c032d580bce80915e607d7080709ac.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3f9adbf7a943121838a9d5ae6abd729b.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F8b6f05e18ac761e2e22cdf2a1441f47d.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fd0b5031d015426f6476a896c8554d7d0.png\">",[],[],{"id":102,"source":5,"question":103,"options":104,"answer":109,"related":110,"type":24,"origin":25,"createTime":60},103363986,"如图所示,AA′和BB′为两个正交的圆形线圈,AA′的半径为R,通电流I,BB′的半径为2R,通电流2I,两线圈的公共中心O点的磁感应强度大小为( ).\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F04ab162fbf077a17139228f30fbb3e75.png\">",[105,106,107,108],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F533687af5ce7ca76ecf29692266642a8.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3d6c91d5dcede3627d9e211cff6f4735.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F526ec2091e7551a09bc103ee356e0149.png\">","0",[],[],{"courseName":112,"courseImg":113,"workName":114,"workId":115,"count":116,"courseId":117},"2023-2024第一学期大学物理Ⅰ（2）","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7e2d5ad53be3d12aacc56ee37db405b7.jpg","第三单元 电流与稳恒磁场 测验","c63f7909aed64bd49d465c5e90ea6636",33,"9bce13ab6e426b4dce7aeefdd8adc072"]