anonymous
  • anonymous
why do opposite charges attract each other and same charges repel ?please give answer not in reference to the electric lines of forces .
Physics
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
that's more of a philosophy-question than a physics one. How about 'because that's what we observe'? If you'd be a religious person, you could maybe be satisfied with 'because god/allah/whatever made it that way...' In a nutshell: it's just the way it is - period. Calling it 'positiv' and 'negative' is of course completely arbitrary - you could also call them green and yellow or foo and bar.
anonymous
  • anonymous
Maybe, a positive charge behaves as a leaf blower and a negative charge as a vacuum cleaner. Consider the air and figure it out.
anonymous
  • anonymous
Actually, the thing that we can electric field are actually electromagnetic waves.

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anonymous
  • anonymous
please explain what you are telling @dams
anonymous
  • anonymous
The electric (field) force is due to interaction between electromagnetic waves radiated by the charges.
anonymous
  • anonymous
but magnetic field due to a charge only exists when the charge is in motion then how the charges could attract in static conditions/
anonymous
  • anonymous
It's called Coulomb's law - and it's got absolutely nothing to do with magnetism or EM-waves, dams. (sry, but what you wrote is just absolutely wrong) \[F = {1 \over {4\pi \epsilon_0}} {q_1 q_2 \over r^2}\] http://en.wikipedia.org/wiki/Coulomb%27s_law
anonymous
  • anonymous
http://www.ncert.nic.in/NCERTS/textbook/textbook.htm Go to the above website and download the STD XII Physics 1 textbook. In the first chapter (electrostatics), read Physical significance of electric field. Is this what you wanted?
anonymous
  • anonymous
coulombs law gives us the measure of force between existing between two charges, but my question is why do two charges attract and repel, i am asking about the basic reason behind the attraction or repulsion of the charges, and electric lines of forces is just a theoretical concept to understand the behavior of the charges , no practical proof is there for the existence of the electric lines of force.
anonymous
  • anonymous
once again: That is not what physics is about - it'll always be some kind of model to describe and predict your observations - nothing more. You have to understand, that there is no such thing as an underlying 'truth' or something.. To quote one of my favourite philosophers, Heinz von Förster: >>Objectivity is a subject's delusion that observing can be done without him.<< So... charges attract/repel, because charges attract/repel - there is no 'why?' ... it just IS. And it couldn't possibly be any different... idk how i can explain it to you... maybe read some philosophy, like Wittgenstein or Glasersfeld ;)
anonymous
  • anonymous
thanks for the suggestion, you gave quite good reasons but still i think this is not something which we call as reasoning. imagine if we have assumed before the advent of all this science that all what happens is because IT HAPPENS then where would we be today....:)
anonymous
  • anonymous
rajesh: There are always undecidable problems in a System (the 'universe') if you're part of it. There are just questions you cant ask... Asking something like "where do the natural numbers come from" or "why are there 2 different kinds of charges and not - dunno - 7" just doesnt make sense. You have to destinguish between questions you can and questions you cant ask, cause they dont make sense. "Whereof one cannot speak, thereof one must be silent." - Wittgenstein And about the 'underlying truth' thingy ( i dont know how to translate "ontische Wirklichkeit") to english. Here's a short text about truth from nietzsche: http://bit.ly/k4kyZU I never read the english translation, so I don't know how good it is, but maybe it'll idk - at least be a nice read ;)

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