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Questions  >>  CBSE XII  >>  Physics  >>  Magnetism and matter
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Q)

The hysteresis loop of a soft iron piece has a much smaller are than that of a carbon steel piece . If the material is to go through repeated cycle of magnetization , Which piece will dissipate greater heat energy ?

$\begin{array}{1 1} \text{Iron piece will dissipate greater energy } \\ \text{Carbon piece will dissipate greater energy } \\ \text{Both the pieces will proportional to each other } \\ \text{None of the above } \end{array} $

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A)
Solution :
In a hysteresis loop the energy dissipated per cycle is directly proportional to the area of hysteresis loop.
The area of the hysteresis loop is more for carbon steel.
Therefore carbon steel piece will dissipute greater heat energy .
Answer : $ \text{Carbon piece will dissipate greater energy }$
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