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习题练习:Electricity and Circuits: Capacitors

 作者: admin 发布日期: 2026-05-21 08:54   总分: 16分  得分: _____________

答题人: 游客未登录  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 fq w4px 25lq1uee0u,xf zcofxof9..5 of 6.8 μA is used to charge a parallel plate capacitor at a rate of 8.4 volts per second. What 0c4xwfo5poqffx fuzex59 1q 2 uel..,would 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 SI xp;(j0a42h/g +,ezy di - jobr-fqd vdunits in the MKS system, the unit for capacitance is written as ;/2v i-,y-+xof4gjbzhj(e a qr0dpddwhich 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 dtk5nn * 8u9rkn+a gy7.zb m-mgistance d apart are charged by connecting them to a battery of potential dag*kk59ytmbmn n8 n7 +rzgu -.ifference V. The battery is disconnected, and the plates 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 opposi9r:v63b jd)nmc iqe3 itely charged insulated plates have a uniform electric field between theb3rn:m 96i vejq)ic 3dm. The distance 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 separated by a distance d. They ru2wrv-cs .;j carry o;s2-vwur. rjc pposite charges Q and each has surface area A. Which of the following would increase the strength of the electric field between 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 me7nat4;h-g kz r fr,9svtal plates carry opposite electrical charges each with a magnitude of Q. The plates are separated by a distance d andrhvsk, 7-9ag r4z; tnf 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-plate capacitor is connected to a resistanceless cird(uadbm+ u-f:x)/hdu5e 25n(mj vvi hcuit with a battery having emf E until the capacitor is fully charged. The battery is then disconnected from the circ(5d(n u mv)dm f-h/b5 xhij:a2vdeu+ uuit and the plates of the capacitor are moved to half of their original separation 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 connected to a battery. Without discontmj ldvif4+z6g-d 6v ba;8k*qnecting the capacitor, a student pulls the capacitor’s plates apart so that the plate separation doubles. As a result of this action, what happens to the voltage across the capacitor and the energy stored by the v; 86 bj*qvzi4-f6dt dgk+almcapacitor?

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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 (me-va ;x;cmpib6a5 /ej4zeacurrent through the 300 Ω resistor when e4maza(m5ie bv/- cj6e;p; xa 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, t lr q(,8yqchn:he 3.00 μF capacitor is fully charged at 18.0 μC. What is the value oqr cyhn ,q8l(:f the power supply voltage 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 capacitors each with a c2yc0vhro v;c1kigb )9f:ij z4iti a:8qq 70evapacitance of C are connected as shown in the following diagram. What would be tvce91 qy h a:)ijvv0ib0iz7rt:o;48fqg 2 kc ihe total 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 the capacitors are initiallydlky(3bqhz0 36 s vln/ 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 capacito e-o zsno(zfdf6s9-*s fwpu/- rs are initially uncharged.
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 sh715qpwiyyf)) vh ne y-own, ξ =6.0 V, $R_1=7.0Ω$, $R_2= 3.0Ω$ ,$R_3= 6.0Ω$ , $R_4=12.0Ω$ . 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 equili w*am8dg.i7t wbrium, what is the magnitude of the potential difference across t8m da*7wgiw t.he 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 shown, both switches a*rnd1lo 2amo /re closed simur1/d l2a*onom ltaneously. After equilibrium is established, what is the charge on the top plate of the 5 µF capacitor?


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总分:16分 及格:9.6分 时间:不限时
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