Yes thats what I'm seeing
Thank you alan and melody
Thank you 7up
Melody, I didn't finish this topic yet because in the last two days I done other exams so I left the physics for couple days =D
So if we assumed that there is no ameter between a and a' so Vaa' will equal Vab ?
ok, but why in the circuit 25.18b Vaa' = 0 and doesn't equal to Vab ?
Now its very clear I understood this
Thank you all.
Here R is not proportional to L because I flow radially
Right?
Now what is wrong here?
So here the cross sectional area is the surface area of the cylinder ? Which is
2$${\mathtt{\pi}}$$rL
Now to make this clear to me
What is " cross sectional area "
Is it a circle which its area is $${\mathtt{\pi}}{\mathtt{\,\times\,}}{{\mathtt{r}}}^{{\mathtt{2}}}$$