- #1
fonseh
- 529
- 2
Homework Statement
When a part of the channel is constricted , why will the Emin = Eo ?
Homework Equations
The Attempt at a Solution
I just have the figure showing in case 1 and case 2, Emin = Eo without any explanation ... Can someone explain about it ? I tried to search many online resource , but i get nothing .