Hysteresis Loop |
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| A lag between cause and effect. |
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With magnetism it is the amount that the magnetization of a material lags the
magnetizing force due to molecular friction.
Drawing 1 illustrates what is known as a Hysteresis Loop, which is formed when you plot magnetizing force H against flux density B through a complete cycle of alternating current, as seen in Drawing 2. Initially, when the switch is open, the iron core is unmagnetized; both H and B are zero at point a. |
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