- #1
iVenky
- 212
- 12
Take a telegraph line or transmission line which is long. Now slowly the wave propagates through the wire in the forward direction. In the beginning one end of the wire will have a non-zero voltage while the other end will have zero voltage and it takes some more time to get settled after some reflections. Now the question is how can we have two different voltages in a single copper wire? Equipontential means that the voltage should be same everywhere in a single copper.