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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 conductor is placed below a compass. + cujlp ;xiud95n)q0xvm9lm n 3m54eoWhen the conventional current inp;uqoulcm3 +5x lj0)4 m edvn9minx95 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 magnetukynn3 -r )ch*s are to be cut in half along the dotted lines shown. None of the pieces are ro )cnk-* uyhnr3tated. 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 fi5s+-(c n2w s)rm/h o.xx zodiflings sprinkled around three permanent magnets. Pole R is the sa .h) x/s soo5-rdx2(+fcimwnzme 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 (positive) electric curren d,lo a 30doe; +qbjka-f7qo 6ol/cb/xt flows from left to right in a wire as shown in the lqd oj-bea/k oxd+ 7cl;0/a6b,o3fo qdiagram, 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 from left to right nib +d/ infyrz-6ofm9cn ;b47as shown in the accompanying diagram. Which optiob n-7i+riomfcn46/f9ynb ; d zn 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 understand8 pbf/o+usrng9gw(4j4 xi8 gm ing of physics, which representation of magnetic field lines is inconsistent? The squares in the diagrams below simply represent regions of j( i8n94xo8b4/wu ggsfpgm+ rspace.



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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 conveb2y: /8 ka6dpuolzgi9ntional current directed into the plane of the page as shown in thlba o/i2 zdup8g6k9 y:e 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 conventionak,k5)a1a:2 xoca 3t(l rr nwzol current in the left wire (2 A) comes out of the plane of the page an2:,l )( naax15 woratrckozk 3d 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 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 wires are shown e mnxmfxi./m(,szf*kq6p. . bknd on in the figure below. The wire(i* /k.xbm,.fmnx k6.sfpzmq 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 nej-cenb: l5g4 nar a coil of wire. A conventional electrical current is then run through the coil from left to right as shown. This will cause the Norcgbjn-4 : 5elnth 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 inside thri2un8 jcy,w 8 rg+-e*n(hzg te solenoid shown is yjr*nct+,hw- gu8ner8izg(2
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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