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Homework Help: Electric Field

  1. Nov 17, 2016 #1

    Kajan thana

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    Gold Member

    1. The problem statement, all variables and given/known data
    Explain why the gas becomes conducting only when the electric field in the tube reaches certain value?
    2) why does fields does from higher potential to lower potential?

    2. Relevant equations

    3. The attempt at a solution
    If we increase the E then the Force will also increase so I think the gas needs certain amount of force for it to move to other end. I am not sure If I am right.
  2. jcsd
  3. Nov 17, 2016 #2


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    Staff: Mentor

    The problem statement is incomplete. What gas? What tube?
  4. Nov 17, 2016 #3

    Kajan thana

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    Gold Member

    A certain gas in a tube is subjected to an electric field of increasing strength. The gas becomes conducting when the electric field reaches a strength of 35NC^-1
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