Question
Download Solution PDFWhich of the following terms describes a material that becomes magnetised in the presence of an external magnetic field and loses its magnetism once the field is removed?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 3) Soft magnetic material
Explanation:
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A soft magnetic material is easily magnetized when an external magnetic field is applied and loses its magnetism when the field is removed.
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It has low coercivity and low retentivity, making it ideal for applications like transformer cores and electromagnets where temporary magnetism is needed.
Additional Information
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1) Hard magnetic material:
Retains magnetism even after the external field is removed (used in permanent magnets). -
2) Ferromagnetic material:
A general term for materials (like iron, cobalt, nickel) that show strong magnetic properties, which can be soft or hard. -
4) Permanent magnet:
Made of hard magnetic material; keeps its magnetism permanently.
Last updated on Jul 2, 2025
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