# Huge current flows when there is no resistance, consequently, the potential difference is 0 but no current flows if no cell is added to the circuit [closed]

If $$R= 0$$ , $$V= 0$$ and $$I=$$ $$max$$ (i.e. charges are flowing at a huge rate), but when there is no potential difference applied to a circuit, charges don't flow. That means huge current flows when there is no resistance, consequently, the potential difference is $$0$$ but no current flows if no cell is added to the circuit i.e. the potential difference is $$0$$ again. How to explain this contradiction?

• Unless you are working with superconductors, the resistance of a wire might be small but it is never really 0. We might approximate it as 0 when there are other devices in a circuit that limit the current. If there are no other devices, then you shouldn't try to use that approximation. Nov 22, 2021 at 16:43
• There have been many questions on this topic on this site (and on EE.SE) before. Please search and review what's been asked before, before asking a new question. Nov 22, 2021 at 16:44
• Does this answer your question? Ideal wire and resistance Nov 22, 2021 at 16:46
• Nov 22, 2021 at 16:50