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习题练习:Electric Field and Electric Induction



 作者: admin   总分: 15分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月22日 10:29  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  
  94.07: A positively charged conductor attracts a secniie4 ; rbzj(6ond object. Which of the following statements could be t(bjre6 z4;in irue?
I. The second object is a conductor with negative net charge.
II. The second object is a conductor with zero net charge.
III. The second object is an insulator with zero net charge.

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.07: An amber rod is given a net negative charge and helqyga7,oy ce,mr4 j c c/2y*f+dlee(c9 d at rest. Which of the following statements is tyc o c (ymlef2r , a7*9ecey4/dq+gjc,rue?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.08: A negatively charged balloon remains at rest when p m hwoh1(-8e1kbgwzx /laced on a vertical wall. Which one of the following ebkmxh w8w1/z1o g(h-terms is most closely associated with the electrical phenomenon allowing the balloon to remain on the wall?


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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.37: A long straight wire viewfw2* snx 1b9u;n zpd,eed end on carries a conventional electric current out of the paper as shown in the diagram. What is the direction of pun sedx fn,2b;*w1z9the associated electric 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  
  97.05: Point charges 1 anks -ecftr*d3ve0, ha.d 2 have equal magnitude. The diagram to the right shows the electric field lines surrounding them. Which of the folce 3hvrd,te*.s-fka0 lowing statements is true?


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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.26: For the diagram shyyjm2s23qcjhjnptq s6o() q) 34 s(ttown below, what is the ratio of the charges q1 and ot hcjjysm2ss4q2)tq63j3p ny (qt( ) q2 , where the diagram shown has a representation of the field lines in the space near the charges.


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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.17: A small positive test charge is placed at pa15/ g*)6mn tnyv,fbziq+ twooint P in the region near two charges. Which of the following arrows indicates the direction of the force on the pag1myt ,bv 5otwq+*z6/)n fniositive test charge?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.05: A positively charged rod is brought near a metal electroscope na5+nz6v 05r fuk( crethat is initially uncharged. As shown in the figure, the rod does not touch the electroscope. There is no charge transfer between the eleavkfnn 5e0z +rr5c u(6ctroscope and rod, but the leaves of the electroscope move apart from each other when the rod is brought near the top of the electroscope. Which one of the following choices is the best explanation for this phenomenon?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.15: A positively charged objenhtm tnl /7svd- a+bqj;2y5-lz u6cl6ct is brought near but not in contact with the top of an uncharged gold leaf electroscope. The experimenter then briefly touches the electroscope with a finger. The finger is removed, followed by the removal of the positively charged object. What happens to the leaves of the electroscope lnttc6+j;- 5m 6 h/ls7n-vau2 qzbldywhen a negative charge is now brought near but not in contact with the top of the electroscope?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.09: An electroscope is given a positive charge, 2i9f0.t t84jkxe vss jcausing its foil leaves to separate. When an object is brought ntifke 2t.0 sj8jx v9s4ear the top plate of the electroscope, the foils separate even further. We could conclude


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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.06: A charged rod is place49s2 ite* jl ,btpoxj7 4frn3dd between two insulated conducting spheres as shown. The spheres have no net charge. Region II has the same polarity *dsp lj2j7 notxi ef9 4t,3rb4as Region


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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.23: A person rubs a neutral combwsw xm8/)ukgyu2 4o ;t through their hair and the comb becomes negatively charged. Which of the following is the best exuu8 x2w/ sgmt; wo4yk)planation for this phenomenon?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.09: When a positive electrically c79rlo gz wqjanq 9h52d:1cswc 2fwn(*harged glass rod is brought near a neutral hollow metal sphere suspg5(97wqnowj9* l: hc2af1sq 2zn cdwrended by an insulating string, the sphere will be attracted to the rod because:

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.24: Two small hollow metal spheres hung on i*83t 19 w 3xzaicgcdxm,t kkb8nsulating threads attract one another as shown. It is known that a positively charged rod will attract ball A 81b cidt k8z*t3wxg k,c9a3xm.
I. Ball A has a positive charge
II. Ball B has a negative charge
III. Ball A and Ball B have opposite charges
Which of the above can be correctly concluded about the charge on the balls?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.36: Two uniformly charged non-conducting spheres on insulating ba )*jg 1s9 /mskozinol6ses areplaced on an air table. S1ik z sm/*g)9ls6nooj phere A has a charge +3Q coulombs and sphere B has a charge +Q coulombs. Which of the following correctly illustrates the magnitude and direction of the electrostatic force between the spheres when they are released?


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