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Ohm's Law is applicable for transmission lines. It is applicable for every case of every circuit in every situation. That's what makes it a law.

The "complexity" is that 1.) resistance is not constant, it being a function of temperature and other factors, and 2.) for AC circuits, impedance makes the calculation complex.

Answer

Ohm's Law is not a universal law, and applies in very few cases and, then, only to linear or ohmic devices. It certainly doesn't apply 'to every case, of every circuit, in every situation', and many physicists believe that it should not be classified as a 'law'.

If, on the other hand, you are referring to the equation, R = V/R (for d.c.) or R = V/Z (for a.c.) then, yes, these do apply to transmission lines. But you should be aware that these equations are not derived from Ohm's Law!

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11y ago

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