Question:
A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains :
A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains :
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"Soft" ferromagnetic materials like soft iron have high permeability and low retentivity, meaning they align easily but lose magnetism quickly once the field is removed.
Updated On: Jan 21, 2026
- increase in size but no change in orientation.
- decrease in size and changes orientation.
- may increase or decrease in size and change its orientation.
- have no relation with external magnetic field.
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The Correct Option is C
Solution and Explanation
Step 1: Ferromagnetic materials consist of small regions called domains where magnetic moments are aligned.
Step 2: When an external field is applied, domains aligned with the field grow in size by pushing boundaries, while others shrink.
Step 3: Simultaneously, the direction of magnetization within domains rotates to align with the external field direction.
Step 2: When an external field is applied, domains aligned with the field grow in size by pushing boundaries, while others shrink.
Step 3: Simultaneously, the direction of magnetization within domains rotates to align with the external field direction.
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