Một mạch dao động gồm một tụ điện có điện dung C, cuộn cảm L. Điện trở thuần của mạch R = 0. Dòng điện qua mạch i = 4.10^–11sin(2.10^–2t), điện tích của tụ là:

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  While her husband was in the army, Mary _____________ to him twice a week.
  
  

• Choose the best answer for the following sentence:

  I couldn’t cut the grass because the lawn mower ____________ a few days
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• Choose the best answer for the following sentence:

  According to this newspaper, John is said _______________ a new record for the 
  longjump.
   

• Choose the best answer for the following sentence:

  I have never played badminton before. This is the first time I __________ to play.
  
  

• Choose the best answer for the following sentence:

  Since _______________ , I have heard nothing from him.
   

• Choose the best answer for the following sentence:

  After I ________________ lunch, I looked for my bag.
  
  

• Choose the best answer for the following sentence:

  By the end of next year, George _____________ English for two years.
  
  

• Choose the best answer for the following sentence:

  The man got out of the car, ______________ round to the back and opened the boot.
   

• Choose the best answer for the following sentence:

  For several years, his ambition _______________ to a pilot.
  
  

• Choose the best answer for the following sentence:

  Henry ________________ into the restaurant when the writer was having dinner.