Kirchhoff's Law Violations: Transmission Line Equivalent Circuit

[duniltmg1]

Discuss under what circumstances kirchhoffs voltage law and kirchhoffs cureent law are no longer valid, and give an equivalent circuit for the tranmission line in those circumstances?

 

[duniltmg1]

I have found out that kirchhoffs voltage law and krichoff's current law are only vaild when the wavelength (λ) << L.
are there any other circumstances??

 

[duniltmg1]

Discuss under what circumstances kirchhoffs voltage law and kirchhoffs cureent law are no longer valid, and give an equivalent circuit for the tranmission line in those circumstances?

a) it is only valid when the transmission line's length L is very small comparing to the wavelength (λ) of the wave passing through the transmission line.

 

[I_am_learning]

KVL is invalid when time varying magnetic filed creates Electric Field.
KCL is invalid when Divergence of J is created by dispersion of a ball of charge placed inside a conducting medium.

 

[berkeman]

(Merged 2 threads...)

 

[vk6kro]

I have found out that kirchhoffs voltage law and krichoff's current law are only vaild when the wavelength (λ) << L.
are there any other circumstances??

If L is the length of the wire, then this is not correct.

wavelength (λ) >> L.
The wavelength is has to be much greater than the length of the wires or there may be transmission line effects or even antenna effects where power is radiated and lost from the circuit.