Questions:

1. Show that if the impedances add like vectors, then the voltages must also add like vectors. Show this algebraically, and using phase diagrams, that is, draw one diagram showing the impedance vectors (phasors, as they are called), and one diagram showing the voltage phasors.
2. What about the relative phases? Look at the diagrams above. For which circuit elements are the voltages in phase with the current? For which are the voltages out of phase? Are the relative phases consistent with the memnonic, ``ELI-the-ICE man''?