Those materials are well suited for making permanent magnets which have ________ retentivity and _________ coercivity
Correct answer: B. high, high
- A. low, high
- B. high, high
- C. high, low
- D. low, low
Explanation
A permanent magnet must retain strong magnetism after the magnetizing field is removed, requiring high retentivity, and must resist demagnetization, requiring high coercivity. Hence the combination is high, high.
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