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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 wire conductoyn a*io7 id: nju0(dn.r is placed below a compass. When the conventional current in the conductor iynna.j 07iuon(* : ddis from south 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 cyu-jns 1 8+hkdut in half along the dotted lines shown. None of the pieces are k1+8dujyn- sh rotated. 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 iro cvyop+ jr;83tn filings sprinkled around three permanent magnets. Pole R is the same as pocv 8jy +;tpro3les


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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 (positive) electric current flows from*m35pb;5xoio2y q tpw left to right in a wire as2qox tmpp*35oyw;bi 5 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 fro/q.9:3s z dvjqe9dx kxm left to right as shown xz .9q j:ekqsvx93/ddin 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 ofte,iybrct2z6dh9/0v) ulz tw+g ,gw7 magnetic field lines is inconsistent? The squares in the diagrams below simply represent regions0/t9 ,lb2g 7 zhe,z vycrgi6w+dtu)wt 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 a3q) k s f7xy+8h5lnbkimz:1h e conventional current directed into the plane of theh+ksfqk li71ebm:3hz5) x8ny page as shown in the figure. Which one of the arrows 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 fixed in space so thaaffu 809elw oo79rb3av 3c-ejt the conventional current in the left wire (2 A) comes out of the plane of the page and the conventional current 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 fie90cjf euf7lwb3o 3-r8 e9ao vald 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-ca idu p8oreu8un t496*orrying wires are shown end on in the figure below. The wire oiuu t ond4p869*e ruo8n
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 placed rbi18ap7 v*,of./ m gf4 qjuip bwae115jmn-jnear a coil of wire. A conventional electrical current is then run through the coil from left to rigio fb11p,*jvfmqju-ae np/ra4w871j g.m5biht as shown. This will cause the North pole of the compass 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 throuplu lv8 ykqv0591 *ixcgh point P inside the solenoid shown ixll8c9v1qv5u y * p0kis
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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