* Cho mạch điện như hình vẽ. Cuộn dây có hệ số tự cảm L, tụ có điện dung C.

                                     

Sau đó mở khóa k, diện tích cực đại trên tụ C là 

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  All of us use energy every day, for transportation, cook, heating and cooling rooms,

  manufacturing, lighting, and entertainment.

• Find a mistake in the four underlined parts of the sentence and correct it:

  We rely on energy to make our lives comfortable, productive but also enjoyable.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Entertainment is an activity designing to give people pleasure or relaxation.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The industry it provides entertainment is called the entertainment industry.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The Mid-Autumn Festival falls on the 15^th day of the eight lunar month of the Chinese calendar.

• Find a mistake in the four underlined parts of the sentence and correct it:

  She was made stay at home all day to look after the children.

• Find a mistake in the four underlined parts of the sentence and correct it:

  By the ending of the 1960s, Neil Armstrong and Buzz Aldrin became the first human beings

  to walk on the moon.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Forty years after Yuri Gagarin became the first man in orbit, Dennis Tito, an American

  businessman has become the world first space tourist.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Dennis Tito blasted off on his trip to the International Space Station, had paid Russian

  space chiefs 20 million dollars for the privilege.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Do they allow us use the office telephone for personal purpose?