Answer the following question:
The hysteresis loop of a soft iron piece has a much smaller area than that of a carbon steel piece. If the material is to go through repeated cycles of magnetization, which piece will dissipate greater heat energy?
After going through repeated cycles of magnetization, a carbon steel piece dissipates greater heat energy than a soft iron piece, because the dissipated heat energy is directly proportional to the area of a hysteresis loop and the carbon steel piece has a greater hysteresis curve area than a soft iron piece.