Kirchoff's Law With Battery Only

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SUMMARY

This discussion addresses the application of Kirchoff's Law in a theoretical scenario involving a resistance-free wire and a battery with no internal resistance. It concludes that such a scenario is non-physical, as infinite current generation is impossible. The presence of finite internal resistance in any real voltage source, even when connected to a superconducting wire, dictates the current flow according to Kirchoff's Law.

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  • Understanding of Kirchoff's Laws
  • Basic knowledge of electrical circuits
  • Familiarity with voltage sources and internal resistance
  • Concept of superconductivity
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  • Study the implications of Kirchoff's Laws in practical circuits
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  • Investigate the effects of internal resistance in voltage sources
  • Learn about conservative electric fields and their properties
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teroenza
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Hello,
If one had a resistance free wire and a battery with no internal resistance, how would Kirchoff's law be applied if the terminals of the battery were connected by the wire? Is this even an appropriate question? I know/believe current would be at infinity. I am still trying to fully understand voltage, but because it is a conservative electric field, wouldn't the equation still be equal to zero?

Thank you
 
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teroenza said:
Hello,
If one had a resistance free wire and a battery with no internal resistance, how would Kirchoff's law be applied if the terminals of the battery were connected by the wire? Is this even an appropriate question? I know/believe current would be at infinity. I am still trying to fully understand voltage, but because it is a conservative electric field, wouldn't the equation still be equal to zero?

Thank you

It is not an appropriate question. Anything that generates infinite current is non-physical.

Any real voltage source has a finite internal resistance. So if you connect it to a superconducting wire, the current is determined by the finite internal resistance of the voltage source.
 

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