The hysteresis curve is generally studied in the case of

Roasting is generally done in case of :

Roasting is generally done in case of :

Elastic hysteresis is

The hysteresis curve for a material is shown in the figure. Then for the material retentivity, coercivity and saturation magnetization respectively will be

The hysteresis curve for a material is shown in the figure. Then for the material retentivity, coercivity and saturation magnetization respectively will be