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习题练习:Capacitors



 作者: admin发布日期: 2024-08-22 20:08   总分: 16分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月22日 11:00  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  
  04.36: An electric current of 6.8 μA is used to charge a parallel plate/nwo4iia 6xb4+i d8q m capacitor at a rate of 8.4 volts per second. What woux4a8 n/4wiq+i mbdio6ld be the capacitance of the capacitor?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.36: In terms of the seven fundamental S x kvbs8(fjuv9rbl7aox2,2s1I units in the MKS system, the unit for capacitancs 8b v7ao(r9x2lfuk,21vsbjxe is written as which of the following?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.29: Two large parallel plates a distance d apart are c:;s*fbdnef55r quzb c+4 5)bsmd 9p wkharged by connecting them to a battery of potential difference V. The battery is disconnected, and the plates fbedcqzw 9 b* p:ms4;rfdu55k5sb+n ) are slowly moved apart. As the distance between plates increases:

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.34: Two large oppositely charged insulatedeaex i9z r8*zf ,fp(7d plates have a uniform electric field between them. The distanceefz iz7 fad*,9xr8(p e between the plates is increased. Which of the following statements is true?
I. The field strength decreases.
II. The field strength increases.
III. The potential difference between the plates increases.

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.37: Two isolated parallel plates are se7k3kgwf)3x h93p c knjparated by a distance d. They carry opposite charges Q and each has surface area A. Which of the following would increase the strength of the electric field betwee) j7w3hknp3g k3kf9x cn the plates?
I. Increasing Q II. Increasing A III. Increasing d

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.18: Two parallel metal plates carry opposite electrical chargcfb6de)qb)v ,amo5t 5es each with a magnitude of Q. The)evq mdb5t) a6b ofc5, plates are separated by a distance d and each plate has an area A. Consider the following:
I. increasing Q II. increasing d III. increasing A
Which of the following would have the effect of reducing the potential difference between the plates?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.39: A parallel-platep8aks3s 8 vw pyt(5:xwgl1pq m1it/b4 capacitor is connected to a resistanceless circuit with a battery having emf E until the capacitor is fully charged. The battery is then disconnected from the circuit and the plates of the capacitor are moved to half of their original separation spv 8st3x 5(kbylg81pm /w:4i1ap tqw using insulated gloves. Let $V_new$ be the potential difference across the capacitor plates when the plates are moved together, $V_old$ be the potential difference across the capacitor plates when connected to the battery. $V_new/V_old$=?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.42: A parallel-plate capacitor is connect7zr9c9d h3fa ced to a battery. Without disconnecting the capacitor, a student pulls the capacitor’s plates apart so that the placa9 h3 dc7rzf9te separation doubles. As a result of this action, what happens to the voltage across the capacitor and the energy stored by the capacitor?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.31: See the accompanying figure. What is the current throukdycag785r ,ygj39 x8h. en dzgh the 300 Ω resistrd8n7gkgx.9j 8 eca h yz3,yd5or when the capacitor is fully charged?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.39: In the circuit above, the 3.00 μF capacitor is fw /d,:p1iczb/ 2rr4t woskjfbg (un6za/qw1.ully charged at 18.0 μC. What is the value of the power supply voltagjwwrzt b:.w2so/p g/nfazi1 46(kb r,d1ucq/e V?


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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.19: Three identical fe4 : ;k3o4dze. hzrl+s1rpxkcapacitors each with a capacitance of C are connected as shown in the following diagram. What would be the tk:der 3+ohrx ek 4lzs.fp4z1;otal equivalent capacitance of the circuit?


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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.43: Assume that yk d6t sy*h.+k hgi7.+- brdjsthe capacitors are initially uncharged.
At time t = 0, the switch S in the circuit is closed. At that instant, what is the equivalent resistance ofthe circuit?


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.44: Assume that the capacitors are initially upd*ddye ,j-f3 qgep hqu 3mqci9t7 p05b; mr/3ncharged.
After the switch has been closed for a long time, how much charge is on the positive plate of the 3 μF capacitor?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.31: For the circuit shown, ξ =6.0 ,v,i)d1in x vuv* g,hoV, $R_1=7.0Ω$, $R_2= 3.0Ω$ ,$R_3= 6.0Ω$ , $R_4=12.0Ω$ . After operating for a long time, equilibrium is established. What is the voltage across the capacitor at equilibrium?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.47: Once the circuit shown reaches equilibrium, 6zj jmudn7 2;ww0q mole/gx hs 2m5(r0what is the magnitude of the potential difference acros0gz7wmj 2j nro50 eqh6mw;mud (l s2x/s the capacitor?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.48: For the configuration of capacitor sho(wy8/ 1d,hnq pom/xe lwn, both switches are closed he ly/8(pxwmq1n,d/ osimultaneously. After equilibrium is established, what is the charge on the top plate of the 5 µF capacitor?


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