When a straight conductor is carrying an electric current

Options :
  1. there are no magnetic lines of forces near it
  2. there are circular magnetic lines of forces around it
  3. there are megnetic lines of forces parallel to the conductor along the direction of current
  4. there are magnetic lines of forces parallel to the conductor opposite to the direction of current

Answer and Explanation :-

Answer: Option 2


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Those English always say, "Look before thou leap". But, as is customary with the English, that is looking the wrong way. I say, Ranga, to look before thou look. Then, when thou actually looks before thou leaps, thou will have already done the leaping up here, and the leaping will be much easier, if thou does it at all.
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