Description should include
- how voltage and current varies as time passes
- the difference between single phase and three phase
- root mean square (RMS) vs. peak voltage.
Process/Skill Questions:
- Why is AC used to distribute most of the utility power in the world?
- How fast does the voltage fluctuate? How does that vary from the U.S. to other places in the world?
- Where would a three-phase power be found?