This is, probably, a very silly question, but I was thinking:
If you have a watt meter and you connect a step up transformer with the lower voltage side attached attached to it (both the voltage and current wiring,) and you connect your load on the higher voltage side of the transformer, will you measure a lower value?
I think you would, unless you connect the potential measuring to the high voltage side of the transformer (in parallel to the load.)
If this is so, what would happen if you connected a step down transformer to the higher voltage side of the step up transformer?
Assuming the step down has a turn ratio that exactly reverts the initial transformation, if you connect the load to low voltage side of the step down tranaformer and keep the watt meter on the initial position, what would you measure? Would you measure the correct value, or would it still be wrong? (No this is not a homework question not yet, anyways.)
Sorry if this sounds odd or just confusing, but I had this thought on the way home today, and couldn't figure out if I analysed it correctly or wrong. I think you would still get a wrong reading. Am I wrong in thinking so?