Question
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 magnetisation, which piece will dissipate greater heat energy?
Solution
In a hysteresis loop, the heat lost per cycle is proportional to the area of the loop. Since, the carbon steel piece has greater area therefore, it will dissipate greater energy.
