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习题练习：magnet and magnetic field lines
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 作者: admin  发布日期: 2024-08-02 21:11    总分: 12分  得分: _____________

答题人: 游客未登录  开始时间: 24年07月29日 14:24  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.27: A long straight wibda,w+wy b-hc. zk dsdt+0-y0td r25 gre conductor is placed below a compass. When the conventional current in the conductor is from sw+,d b agbdhc02d- s+yk5rd zt.w0yt -outh to north and large, the N pole of the compass:



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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.17:Two bar magnets are to be cut in half along the dottedd8og4dlp j dn lt;6q23bn *ze3 lines shown. None of the pieces are rot4 j;6bg l dd*ptn38d3nozq2leated. After the cut:


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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.21: The diagram to the right depicts iron filings sprinkled ar 1 d;yzn diad368gmu7*s;eugiiuo( - eound three permanent magnets. Pa i1ddi7u(i3 u y- 6dmeus8ge;gno*;zole R is the same as poles


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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.04: If conventional (positive2- akt-o73bpio j e9vm -mkxu,) electric current flows from left to right in a wire a- mmab-eo9k, tj-2ouvkpx 73is shown in the diagram, what is the direction of the magnetic field at point P?



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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.02: An electric current flows through a horizontal wire fro7qe6v 0iz+muzjd1 yixu7 , ,pom left to right as shown i6e+, x vio1pmuidq07j7yu z,zn the accompanying diagram. Which option best represents the direction of the magnetic field at point P?



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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.41: From our current understanding of physics, which representation of macp..j)bvb.cp /d x;p ugnetic fi bub.pcp j;pc. ).d/vxeld lines is inconsistent? The squares in the diagrams below simply represent regions of space.



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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.28: A long straight wire has a conventional cur/rayxbzf8 t-dy 5+e ,orent directed into the plane of the page as shown in the figure. Which one of the arb5 8f rz+oxe/dty, -yarows shown best indicates the direction of the magnetic field associated with this wire at the location labeled P?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.33: Two long wires are fofc* hojt rf64v.0ai8ixed in space so that the conventional current in the left wire (2 A) comes out of the plane of the page and the conventional currentthv4of jc8a0 r6f.oi* in the right wire (3 A) goes into the plane of the page. In which Region(s) is there a place on the x-axis (aside from infinity) at which the magnetic field is equal to zero from these currents?



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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.31: Two very long current-carryi0hgnkh8r /9u 4xjaeb, ng wires are shown end on in the figure below. The wire bxjkg9na8 euh /h4,0ron
the left has a 4A current going into of the plane of the paper and the wire on the right has a 3A
current coming out of the paper. Disregarding the case of x → ±∞, in which region(s) could the
magnetic field from these two wires add to zero on the x-axis.



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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.31: A compass is 2npl3 8qdxnaebq6 5;4szv af*placed near a coil of wire. A conventional electrical current is then run through the coil from left to right as shown. This will cause the North pole of the coa4q 2la* d6 v8bz ps53qefnx;nmpass to:



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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.19: The magnetic field line passing through pov p f4tryj21a36dg5 d/vvth9 nint P inside the solenoid shown5 1 hdjrgt 6nv tf4vvd3a2/9py is
directed



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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.36:When one compute the square root of the ratio of the permeability of free space to the
permittivity of free space, one obtains $\sqrt{\frac{\mu_0}{\varepsilon_0}}$= 377. What is the unit of this quantity?

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  • 姓名:游客(未登录)
    •
    总分:12分 及格:7.2分 时间:不限时
    未答题: 已答题:0 答错题:
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