Hi guys!
In terms of electricity I know what is open circuit etc .. but in terms of transmission line if I have generator connected to two transmission lines and on the end of the two lines(cable coaxial) there's a load, lets assume I didn't load the circuit (I mean at the end I disconnected the load) .. still I get current and voltage on the circuit? because in terms of electricity words if we have a disconnection on the circuit then we don't have current/voltage...

My Answer: I reckon there would be still a current and voltage, but because I'm not working on labs so I can't know .. I need to verify about that !

there's a photo describe the circuit that I'm talking about ( but in my case lets assume we disconnected the load physically)

https://www.google.com/search?q=tra...AUIECgB&biw=1242&bih=568#imgrc=OSys1jDxfR3ZFM:

 

With DC voltage applied to a transmission line, there will be voltage measured at the load and current through the load according to Ohm's Law applied at the load. With the load removed, there is still voltage and no current.

AC signal on a transmission line is covered here:

https://www.allaboutcircuits.com/textbook/alternating-current/chpt-14/impedance-transformation/

 

thanks !!!

 

Here is a very nicely done visualization of how you might visualise the voltage travelling through the transmission line, and how reflections a discontinuities affect it. (yes this is about sound, but the way it behaves is the same with electrical transmission lines)