Problem 4. When you plug in a device like a computer, often there is a transformer box on the cable to lower the rms voltage to about 12 volts. A) Explain how such a transformer would work

B) You have a choice between a cable where the transformer box is at the very end (right where you plug it in) and another cable where the transformer box is in the middle of the cable. Otherwise, the cables are the same (same size wire, same total length).