Which of the following statements is incorrect about hysteresis?
- AThis effect is common to all ferromagnetic substances.
- BThe hysteresis loop area is proportional to the thermal energy developed per unit volume of the material.
- CThe hysteresis loop area is independent of the thermal energy developed per unit volume of the material.
- DThe shape of the hysteresis loop is characteristic of the material.
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$A$ bar magnet has a coercivity of $4 \times 10^3 \text{ A m}^{-1}$. It is placed inside a solenoid of $12 \text{ cm}$ length and $60$ turns. The current that should be passed through the solenoid to demagnetize the bar magnet is: (in $\text{ A}$)
DifficultTS EAMCET 2023
View SolutionWhat is Curie temperature? And what is retentivity?
Medium
View SolutionMagnetic hysteresis is exhibited by . . . . . . magnetic materials.
The coercivity of a small magnet where the ferromagnet gets demagnetized is $3 \times 10^3 \ Am^{-1}$. The current required to be passed in a solenoid of length $10 \ cm$ and number of turns $100$,so that the magnet gets demagnetized when inside the solenoid,is:
Which of the following is represented by the area enclosed by a hysteresis loop?
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