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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 9z 8d6 y/gvkh0g( hsqrconductor is placed below a compass. When the conventional current in the conductor is from south to north and large, the N pole 6q/g(gh0d yvrz h8sk9of 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 t7feob7 (jdwx :o be cut in half along the dotted lines shown. None of the pieces aofb x7: w(j7edre 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 ssf9c kn )w0az-prinkled around three permanent magnets. Pole R is the same akwn z09-)sc afs 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 (positivexm8meb sdc* 8,. jii+ gk z7ou/9o*jdi) electric current flows from left to right in a wire as shown in the diagram, what i8omiu/jcod +.j,k 9ix z8*ib gsm7 e*ds 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 curres.og, h+bkgp8 nt flows through a horizontal wire from left to right as s8og. hbpgsk,+hown in 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 currenti vx+sv7 qp60a understanding of physics, which representation of magnetic field lines is inconsistent? The squares in the diagrams below simply represent r +iv6xs7 vp0aqegions 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 wirc 8p*n pydlp qh4 tpu2:a;brqwi,m5,3e has a conventional current directed into the plane of the page as shown in the figure. Which one of the arrows shown best indicates the direcm25p;np,y83dbh, qq*tulcapw 4 ri :ption 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 ch8-;yb+lru9gxk0sn uonventional 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 pag+;ynsl8-r9g 0hbukx ue. 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 end on in the fh:n1 8y 0prcns4jz/sfcbm7e -igure below. The wire 7 j r8 cn-1nyp/e0:fcbsmzhs4on
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 p z5;xra m38ihiklww-,k q; wd,laced near a coil of wire. A conventional electrical current is then run through i,l kqr ;am ;5ww-3,8dwzxkhi 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 through point P insas9rp;u6 .zyx ide the solenoid shown issu9.xyzr ;a6p
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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