Sinusoidal voltage applied to zero resistance conductor

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Applying a purely sinusoidal AC voltage across a theoretical zero-resistance conductor, such as a superconductor, raises complex questions about current behavior and circuit properties. The discussion highlights that while zero resistance implies infinite current, practical and theoretical limitations prevent this scenario from being realized, as inductance and other factors still play a role. Participants emphasize that even in an abstract thought experiment, the assumptions made about resistance and inductance lead to contradictions with established physical laws, such as Ohm's law. The conversation ultimately concludes that the notion of a zero-resistance conductor is fundamentally flawed, as it cannot exist in practice or theory without violating key principles of physics. Thus, the experiment remains a philosophical inquiry rather than a feasible physical scenario.
  • #31
DaleSpam said:
I understand what you are saying, but the OP specified both 0 resistance and 0 inductance (so 0 impedance, real and imaginary). Obviously it is unphysical, but in principle you cannot apply any voltage across it.

I'm sorry, but i cannot seem to interpret your statement. In my opinion, a voltage can be applied across the abnormal conductor, just that it would not 'appear' across it as there is no impedance available for the voltage to drop across and 'reflect' itself externally...as all the voltage will be 'used up' in driving infinite current thru the said conductor! :rolleyes:
 
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  • #32
Phrak said:
Since we're addressing an unphysical never-ever land, I think it could
Good point. If the premise gets rid of part of Maxwell's laws, why not some other part also.
 
  • #33
b.shahvir said:
I'm sorry, but i cannot seem to interpret your statement. In my opinion, a voltage can be applied across the abnormal conductor, just that it would not 'appear' across it as there is no impedance available for the voltage to drop across and 'reflect' itself externally...as all the voltage will be 'used up' in driving infinite current thru the said conductor! :rolleyes:
Phrak is right, forget what I said. You are making up a magical conductor so feel free to make up a magical voltage as well. Use whatever fantasy-land answer you want.
 

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