A material for good magnetic memory should have____________?
Correct answer: D. high retentivity
- A. low hysteresis loss
- B. high permeability
- C. low retentivity
- D. high retentivity
Explanation
Good magnetic memory means the material retains its magnetisation after the magnetising force is removed, so high retentivity is required. Low hysteresis loss and high permeability are desirable for other magnetic applications, not memory storage.
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