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单选题 Z11-01-06. 一带电粒子以速度垂直射入匀强磁场中,它的运动轨迹是半径为R的圆, 若要半径变为2R,磁场B应变为

A.

B. 2B

C.

D.

大学物理1课程封面

学科：大学物理1

时间：2023-05-31 03:47:03

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Z10-01-03. 一边长为l=2m的立方体在坐标系的正方向放置,其中一个顶点与坐标系的原点重合.有一均匀磁场<img src="https://tihai-oss-cloud.itihey.com/img/fd75863a73731a52b7fabe22b9770460.png">通过立方体所在区域,通过立方体的总的磁通量有

A. 0B. 40 WbC. 24 WbD. 12 Wb

载流的圆形线圈(半径<img src="https://tihai-oss-cloud.itihey.com/img/e0f7bb8f02ed650d957aa95d97f25846.png">)与正方形线圈(边长<img src="https://tihai-oss-cloud.itihey.com/img/6514973dc9e916e6999798a1e0f561c3.png">)通有相同的电流强度I.若两个线圈中心<img src="https://tihai-oss-cloud.itihey.com/img/8863f50b3247800eb4c438d857923d88.png">、<img src="https://tihai-oss-cloud.itihey.com/img/1fe8788710a114671298e1111141ef6c.png">处的磁感应强度大小相同,则<img src="https://tihai-oss-cloud.itihey.com/img/68cd6e9b65ff3af7cce2f3dd23df0a16.png">为

A. <img src="https://tihai-oss-cloud.itihey.com/img/9bd77c0dec411953a2e5d2d4872dc65c.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/89b6748619c4265aba8eae44e9370388.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8f2109b11ee688df0a11ceab2053244f.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/73e9abbb04b4655a69dec7488d126bbe.png">

Z11-01-05. 一个通有电流I的导体,厚度为D, 横截面积为S, 放置在磁感应强度为B的匀强磁场中,磁场方向垂直于导体的侧表面,如图所示,现测得导体上下面电势差V, 则此导体的霍尔系数等于: <img src="https://tihai-oss-cloud.itihey.com/img/7af40465c3e964773107b6a3ce03ba51.png"> Z11-01-05图

A. <img src="https://tihai-oss-cloud.itihey.com/img/1d8a888cf82deb25e44e8a11ebb599a1.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/18f13e3fd28e50b1ee06eb52df453d9a.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/7b80e7436f3ac2d7b98597025c8c486e.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/9424f9770b7ed8ac02d85493b2dec140.png">E. <img src="https://tihai-oss-cloud.itihey.com/img/cf36d0391be0591339c31a863757350c.png">

Z10-01-02. 在地球北半球的某区域,磁感应强度的大小为<img src="https://tihai-oss-cloud.itihey.com/img/e0229aad69b36f15458df32f5a1c8758.png">T,方向与铅直线成60度角.则穿过面积为1平方米的水平平面的磁通量

A. 0B. <img src="https://tihai-oss-cloud.itihey.com/img/e0229aad69b36f15458df32f5a1c8758.png">WbC. <img src="https://tihai-oss-cloud.itihey.com/img/1a3a4e1e2f44fd09f7d4b77ca82fd795.png">WbD. <img src="https://tihai-oss-cloud.itihey.com/img/18e77f7056b5b101bfd64bc89357b375.png">Wb

Z10-02-09. 一半径为a的无限长直载流导线,沿轴向均匀地流有电流I. 若作一个半径为R=5a、高为<img src="https://tihai-oss-cloud.itihey.com/img/e50fdc1e0de21285d4067d64f0b76c2d.png">的柱形曲面,已知此柱形曲面的轴与载流导线的轴平行且相距3a (如图), 则<img src="https://tihai-oss-cloud.itihey.com/img/d77bd5047bd1d2873835203462c34fed.png">在圆柱侧面S上的积分 <img src="https://tihai-oss-cloud.itihey.com/img/06c0c85894ee7d67ceded13acf13bdd9.png"> ________.<img src="https://tihai-oss-cloud.itihey.com/img/6c9fb54e64f9b4eafaea79489d12a136.png"> Z10-02-09图

A. <img src="https://tihai-oss-cloud.itihey.com/img/9aa828a23a813adf26afc4b004a13038.png">B. 0C. <img src="https://tihai-oss-cloud.itihey.com/img/4a8788790637d231037e08b31019bcac.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/7a2d030cca017120e8707a04b24084ea.png">

Z10-02-10. 在匀强磁场<img src="https://tihai-oss-cloud.itihey.com/img/d77bd5047bd1d2873835203462c34fed.png">中,取一半径为R的圆, 圆面的法线<img src="https://tihai-oss-cloud.itihey.com/img/2c78626ed71870b6bc8f31e334dd8c2c.png">与<img src="https://tihai-oss-cloud.itihey.com/img/d77bd5047bd1d2873835203462c34fed.png">成<img src="https://tihai-oss-cloud.itihey.com/img/997f564f92b9ecd161ff9f3e1948bd99.png">角,如图所示,则通过以该圆周为边线的如图所示的任意曲面S的磁通量<img src="https://tihai-oss-cloud.itihey.com/img/eaddad9ea4ec65d30068d005b55081c2.png">____.<img src="https://tihai-oss-cloud.itihey.com/img/6a2ca04ceceba116875c971f7773238a.png">Z10-02-10图

A. <img src="https://tihai-oss-cloud.itihey.com/img/58cb3c81ad438ebcf8bf3edd2039862d.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/eb09dc3260ece457924f6a019ee86e04.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/7936699a598c271b88ac47fe14d857b3.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/02f184c29a7641f05df8fc45818b0704.png">

Z10-02-11. 一电量为q的带电粒子以角速度<img src="https://tihai-oss-cloud.itihey.com/img/da3c315cab44b35ff47e2cac7d3589c1.png">作半径为R的匀速率圆运动,在圆心处产生的磁感应强度<img src="https://tihai-oss-cloud.itihey.com/img/daf097f02ab056974ddb4ec77aa7dd3a.png">____

A. <img src="https://tihai-oss-cloud.itihey.com/img/ebef3d79e6f80aa5e8881345c4583f2a.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/0f1f1728a6367c815853b0cc99c5ef08.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/d6cef4dc5ce145dbecfdd7d6e0c6fb53.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/14967400601cbb0b120dc26d77552bfd.png">

Z10-02-14. 如图示, xoy和xoz平面与一个球心位于O点的球面相交,在得到的两个圆形交线上分别流有强度相同的电流,其流向各与y轴和z轴的正方向成右手螺旋关系,则由此形成的磁场在O点的方向为____. <img src="https://tihai-oss-cloud.itihey.com/img/1f0d37cabc09591c069377c485823e8b.png">Z10-02-14图

A. OYZ平面(与Y, Z成<img src="https://tihai-oss-cloud.itihey.com/img/997f564f92b9ecd161ff9f3e1948bd99.png">)B. OXZ平面(与X, Z成<img src="https://tihai-oss-cloud.itihey.com/img/997f564f92b9ecd161ff9f3e1948bd99.png">)C. OXZ平面(与X, Z成<img src="https://tihai-oss-cloud.itihey.com/img/42638844d0a45d0c4f58f2edb183e328.png">)D. OYZ平面(与Y, Z成<img src="https://tihai-oss-cloud.itihey.com/img/42638844d0a45d0c4f58f2edb183e328.png">)

Z11-01-06. 一带电粒子以速度<img src="https://tihai-oss-cloud.itihey.com/img/1c774f23be7d34f382e01d34d848d9a3.png">垂直射入匀强磁场<img src="https://tihai-oss-cloud.itihey.com/img/d77bd5047bd1d2873835203462c34fed.png">中,它的运动轨迹是半径为R的圆, 若要半径变为2R,磁场B应变为

A. <img src="https://tihai-oss-cloud.itihey.com/img/b0b5b24542f5c1bf6b78510c7c583f7c.png">B. 2BC. <img src="https://tihai-oss-cloud.itihey.com/img/115457e175ffd86d259668f598ff3fc8.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/932e1efa2ad68923bade71ccec1139d6.png">

Z11-02-10. 两根长直导线通有电流I, 图示有三种环路,在每种情况<img src="https://tihai-oss-cloud.itihey.com/img/a01ce4b16832db6d0149b2634eaa25d8.png">等于: ___(环路a )、___(环路b )、 ___(环路c ) .<img src="https://tihai-oss-cloud.itihey.com/img/c1e2de831533df5e07e705c16847d39d.png"> Z11-02-10图

A. <img src="https://tihai-oss-cloud.itihey.com/img/65c2fa1e98dd12c650cc889dbff13ba2.png">;0;<img src="https://tihai-oss-cloud.itihey.com/img/65c2fa1e98dd12c650cc889dbff13ba2.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/65c2fa1e98dd12c650cc889dbff13ba2.png">;<img src="https://tihai-oss-cloud.itihey.com/img/65c2fa1e98dd12c650cc889dbff13ba2.png">;0C. <img src="https://tihai-oss-cloud.itihey.com/img/65c2fa1e98dd12c650cc889dbff13ba2.png">;0;<img src="https://tihai-oss-cloud.itihey.com/img/d1315f7b942a9812389c8d582ae59922.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/d1315f7b942a9812389c8d582ae59922.png">;0;<img src="https://tihai-oss-cloud.itihey.com/img/65c2fa1e98dd12c650cc889dbff13ba2.png">

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