The discussion revolves around understanding why the voltage in a short circuit is considered to be zero. Participants are exploring the relationship between current, voltage, and resistance, particularly in the context of Ohm's Law.
The discussion is ongoing, with various interpretations being explored. Some participants suggest that real-world limitations on current must be considered, while others emphasize the conceptual understanding of voltage and energy in relation to resistance.
There is a mention of real circuits where current is limited by power supplies, indicating that practical constraints may influence the theoretical discussion. Participants are also advised to focus on the physical concepts rather than solely on mathematical manipulations involving zeros and infinities.
alexmath said:Why voltage in a short circuit is 0?
I=U/R , R goes to 0, I goes to infinity => U=IR= 0 times infinity, i don't get it, why 0 "wins" here? Thank you!