Explain hysteresis. Show that hysteresis loss per unit volume per cycle of magnet-
isation is given by the area of B-H loop.
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A hysteresis loop shows the relationship between the induced magnetic flux density B and the magnetizing force H. It is often referred to as the B-H loop. ... This is referred to as the point of retentivity on the graph and indicates the remanence or level of residual magnetism in the material.
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