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Electrostatic basic

  1. Sep 23, 2008 #1
    why like charges repel n unlike charge attract each other?????????
     
  2. jcsd
  3. Sep 23, 2008 #2

    CompuChip

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    What sort of answer do you want?
    The empirical one (people have always observed that it is so), the electrodynamical answer (the force law between charges depends on the product [itex]q_1 q_2[/itex]), the field theoretical one or the standard-model argument?

    My point it, is seems to be such a basic fact of nature that you can get as fundamental as you want.
     
  4. Sep 24, 2008 #3
    it moves toward the state of minimum energy.
     
  5. Sep 24, 2008 #4
    why its a fact i want to knw that ?????????
     
  6. Sep 24, 2008 #5
    can u plz explain how they move towards state of min energy?
     
  7. Sep 24, 2008 #6
    i can explain why its the state of minimum energy.

    the energy in each infinitesimal part of the field is proportional to the square of the field intensity. when 2 like charges overlap then their fields are everywhere doubled. hence four times the energy of a single particle is stored. when they repel apart that leaves half the energy to be released as kinetic energy.
     
  8. Sep 24, 2008 #7
    tis shows y like repel each other wat abt unlike charges???
     
  9. Sep 24, 2008 #8
    same thing. the field of 2 overlapping unlike charges is zero. all the energy is released as light.
     
  10. Sep 24, 2008 #9
    thanks

    but can u provide me link of tis if u knw(multimedia)

    i cant get u completely
     
  11. Sep 24, 2008 #10
    I'm not aware of any
     
  12. Sep 24, 2008 #11
    kkkkk still thanks for the answer
     
  13. Sep 24, 2008 #12

    CompuChip

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    Yes, so did a lot of other people. This has led to the development of theories like the Standard model, QFT and string theory :smile:
     
  14. Sep 24, 2008 #13

    rbj

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    because they are extremely heterosexual and homophobic.
     
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