Which magnetic material is categorized as 'magnetically soft', meaning it is easily magnetized and easily demagnetized?
Answer and explanation
Correct answer: B. Soft iron
- Step 1: Soft iron has high magnetic permeability and very low retentivity, losing magnetism when the external field is removed. Step 2. This makes soft iron ideal for transformer cores and temporary electromagnets. Answer: Soft iron. Why not the others: Steel, Alnico, and cobalt alloys are magnetically hard materials used to manufacture permanent magnets.
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