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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 straigh))l oe9.hkit et wire conductor is placed below a compass. When the convene9 )io.)tlhke tional current in the conductor is 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 cut in half along the dotted lines sh a d0ttcp zjw)52*( vsid/gh;bown. None of th vz/0) jgatbdp5si(2dw; tc*he pieces are 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 iron filings sprinklfe s v: s0mj8:qszw*ev6jfc5- ed around three permanent magnets. Pole R is the same as e0m:z5 6esc8-qfjws vfs*: vjpoles


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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 cpd h42a 7gnypa 5ezs.2xj( *e(cxnp- kurrent flows from left to right in a wire as shown in the diagram, what is the direction ofhxsn2ep5azp*ey-gj4ad(. k7px2c ( n 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 t,2ts-d0wyz duky05 hfrom left to right as shown in the accompanying diagram. Which optidyz tw5sd2 h 0k0uy-,ton 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 representatiol560a qb 3twzun of magnetic field lines is inconsistent? The squares in the diagrams below simply represent regions oq a50w3t lzbu6f 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 current directed into the yjl1ab od7ib, 3.:n 9e)mk ynwplane of the page as shown 9oykid,y1wb:mb7n e3 la. ) jnin 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 that the conventionalaupk bmwwvtzo 8aq4h/ 2+728h current in the left wire (2 A) comes out of the plane of the page and the conventional current i8/7qtw 2p2bmuokh8hzwava + 4 n 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-carrying wnng* pg. z 30(ick+8nyg)lsbo ires are shown end on in the figure below. kbi np8n ogcg*+3 0s(.)zglny The wire on
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 near a coilwjys1b; 8cc uh* (/jjr of wire. A conventional electrical current is then run through the coil from h;jwy (br j c*jc8/us1left to right 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 through point P insidenril9 wn.;k, gy0mwz/ the solenoid shown is / wliw,kn .nyz90m;rg
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)
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    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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