I would be interested in hearing what there is other than resistors - just curiosity.
So, as I understand, I am right about the power then. For example, a 1000W water heater is likely to draw 1000W until it heats up, and while it's heating up, gradually decreasing the wattage, while at *set* temperature, it uses just enough wattage to not get cold, maybe something like 800W.
Another example, a motor will eat up the maximum allowed wattage for maybe 5s, until it spins up and is fully spinning, which is when it'll use just enough to keep spinning - for example, a 200W motor will use full 200W for 5 seconds, then it will use maybe 120W to keep operating.
Assuming I understood the concept correctly, are my numbers in the examples way off, or it's possible?