"Keith Dysart" wrote in message
...

What happens on a line that is terminated in a real
impedance that is not equal to Z0?

There are aspects of both travelling waves and
standing waves present on the line.

Is it appropriate to use P = V * I?

it is always appropriate to use P=V*I on the forward and reflected traveling
waves. it is never appropriate to use it on the standing wave voltage and
current. period... plonk.