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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 f 4egtrq.tyr79 u.oa0is placed below a compass. When the conventional current in the conductor is from south to north and large, the N pole of the ce9qra 7t t0.4ogfy.ur ompass:



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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 - . ozhszp+t3n8 zlzq,the dotted lines shown. None of the pieces are rottzh spn . qzz-+loz83,ated. 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 iroskg8 keba7 zv3k l 1mr;:-bj+sdr* eg3n filings sprinkled around three permanent magnets. Pole 3dgab:zs1r3 k8kmrj ;sgle+ekbv-* 7 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 (positive) electric current flows from left to right0u:o3nxbyld/w b.- a h in a wire as shown in the diagram, what is the directi0ounb/b wh d:-yl3xa.on 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 left44 vuch, mhp5y to right as shown in the accompanying diagram. Which optioych4,4m u hp5vn 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 representay4hsmev6*.d r;h:(of3u rve-bb 2 xhxvho9p9 tion of magnetic field lines is inconsistent? The squares invx ubsvr2f (eoob9. mvhr4-h3h:peh6 ;dx*y9 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 current isr.f)rfrn* p95pea 5 directed into the plane of the page as shown in the figure. Which one of the arrows shown best indicates the direction of the magnetic field asso)*aprfe n59pif.r r5s ciated 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 conventionalfjinr0iz v4;y tj(md u3t3 .,v current in the left wire (2 A) comes out of the plane of the page and 3 .ijvv4ydm,u(;j30 nfz trit 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,:g;d crfm. qi wires are shown end on in the figure below. The w.: rm;idqfg c,ire 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 e3cdjrpt ie:; /++oiaplaced near a coil of wire. A conventional electrical current is t/re ij:dec3+ ot+ia;p hen run through the coil from left 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 gmd.)w7-wm)vnyrn w/through point P inside the solenoid shown w-nyn))dr/ .mm 7 wwvgis
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
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