1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Kirchoff's Law With Battery Only

  1. Jul 28, 2011 #1
    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
  2. jcsd
  3. Jul 28, 2011 #2


    User Avatar

    Staff: Mentor

    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.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook