Ba dòng điện có cường độ bằng nhau 2A chạy trong ba dây dẫn thẳng dài vô hạn, song song, cách đều nhau một khoảng 5cm trong chân không và không đồng phẳng, I₁ và I₂ ngược chiều I₃. Xác định lực tác dụng lên 1m dây I₃?

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:

  It's nearly two years since I last have gone to Dalat.

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

  The students were interested in take a field trip to the National Museum, but they were not able to raise enough money.

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

  Janet is finally used to cook on an electric stove after having a gas one for so long.
  
  

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

  Never before have so many people in the United States interested in soccer.

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

  Can you call me at 7.00, because I leave tomorrow?

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

  Terry hasn't been to London when we went there together.

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

  According to the weather forecast it is raining tomorrow.

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

  It is extremely important for an engineer to know to use a computer.

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

  Farmers look forward to participate in the county fairs.

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

  This is the person to that I sold my car.