Một mạch dao động LC lí tưởng với tụ điện có điện dung và cuộn dây có độ tự cảm L = 50 mH. Hiệu điện thế cực đại trên tụ là 6 V. Khi hiệu điện thế trên tụ là 4 V thì cường độ dòng điện chạy qua cuộn dây có giá trị bao nhiêu:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the correct sentence which is built from the words and phrases given:

  police / asking / man / house / break into / last night.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  man / play / tennis / millionaire.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  teaching             aching              children              such

• Choose the word that has the underlined part pronounced differently from the rest:

  despite               beside                 friendship                  kind

• Choose the best answer for the following sentence:

  During the summer, volunteer students help _________________ poor in the city to repair

  their shelters.

   

• Choose the correct sentence which is built from the words and phrases given:

  I’d like / watch / film / show / 9p.m / VTC1 channel.
  
  

• Choose the best answer for the following sentence:

  I have made __________________ friends with many local young people when we are on

  the Green Summer every year.

   

• Choose the best answer for the following sentence:

  Our yearly Green Summer often ____________ two months.

   

• Choose the best answer for the following sentence:

  Volunteers work to ____________ the living conditions of poor people and children

  who need help.

   

• Choose the best answer for the following sentence:

  If you experience something _____________, you experience it yourself.