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Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Ferromagnetic material - Ferromagnetic material is defined as the material when the magnetic field is applied to the material it is aligned in the direction of the applied magnetic field and when the magnetic field is removed it will align in the same direction as before. Therefore, it is having a permanent magnetic field.
The susceptibility is positive in the ferromagnetic material.
EXPLANATION:
The soft ferromagnetic material is defined as soft magnetic materials which are easy to magnetize and demagnetize.These materials are used for making temporary magnets. Atoms of ferromagnetic material in an unmagnetized state from domains inside the ferromagnetic material. When an external field is applied, the domains experience a net torque hence changing their orientation.
Therefore, it may increase or decrease in size and its orientation will change.
Hence, option 3) is the correct answer.
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