What is identity of "positive charge" accumulated on + plate of capacitor?

Discussion in 'General Electronics Chat' started by Dong-gyu Jang, Jan 14, 2016.

  1. Dong-gyu Jang

    Thread Starter Member

    Jun 26, 2015
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    Hello.

    When capacitor is charged, we normally say + plate is positively charged while - plate is negative charged. Charge of the - plate should be electron but what are there in + plate? Is it hole like semiconductor?
     
  2. EM.

    New Member

    Nov 13, 2015
    9
    0
    the electrons from the positive side actually goes to the native side
    that means that the positive side looses electrons.
    it is actually the same idea.
     
  3. Dong-gyu Jang

    Thread Starter Member

    Jun 26, 2015
    100
    4
    Electrons are actually going from negative to positive right?

    So you mean when cap is charged negative side is occupied with electrons while positive side has no electron? I don't think it is right picture since electron has no point of potential reference within cap.
     
  4. Picbuster

    Member

    Dec 2, 2013
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  5. BR-549

    Well-Known Member

    Sep 22, 2013
    1,981
    388
    Only a small portion of the electrons on the positive plate are pulled away, giving it a positive charge.
     
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  6. crutschow

    Expert

    Mar 14, 2008
    12,981
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    The positive charge is actually caused by the protons in the atoms that lose an electron, but the protons and atoms don't move (other than from thermal vibration), of course.
     
    Last edited: Jan 14, 2016
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  7. Dong-gyu Jang

    Thread Starter Member

    Jun 26, 2015
    100
    4
    Thanks. It makes me clear.

    Can I ask one more question? Does we normally say holes in metal? I thought the metal has fully occupied valence band and partial occupation in conductor band so no need to talk about hole in metal..
     
  8. crutschow

    Expert

    Mar 14, 2008
    12,981
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    Yes, there are no holes in metal conductors but there are in semiconductor materials.
     
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