Potential Difference and flow of current

[UchihaClan13]

Okay guys
I am a beginner (in electrostatics as i just started studying it)
I am thorough with kirchhoffs rules/laws
But one thing which bugs me is this doubt
So in the book that i am reading
It says that even if the potential difference is zero,current flows through a wire
I don't get how
I mean
After all isn't ΔV=IR
so ifΔV is zero and so is R doesn't that mean that I is infinity or indeterminate
I am guessing the answer's got to do with some sort of assumption/approximation
But could you guys help me out?
Help is much appreciated!:)

 

[UncertaintyAjay]

Could you give some context? Like what was said before that statement? Or just post a picture of the page please

 

[cnh1995]

I am guessing the answer's got to do with some sort of assumption/approximation

It's an approximation, yes. Voltage drop across the wire is so small compared to that across the components that it is taken as 0. Wires are assumed to be ideal. In practice, they do have some resistance. Superconductors are an exception, but that's a different topic.

 

[UchihaClan13]

It's an approximation, yes. Voltage drop across the wire is so small compared to that across the components that it is taken as 0. Wires are assumed to be ideal. In practice, they do have some resistance. Superconductors are an exception, but that's a different topic.

Okay
i get it
Those approximations again
Thanks for clarifying my doubt!:)