Physics-
General
Easy

Question

Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve)?

  1. Permeability    
  2. Retentivity    
  3. Heat energy lost per unit volume in the sample    
  4. Susceptibility    

The correct answer is: Heat energy lost per unit volume in the sample


    Area enclosed by B minus H curve represents energy lost. If the area of hysteresis loop is less energy loss is low whereas if the area of hysteresis loop is large energy loss is high.

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