MCQ
Alnico is used for making permanent magnets because it has:
- AHigh coercivity and high retentivity.
- BHigh coercivity and low retentivity.
- CLow coercivity and low retentivity.
- DLow coercivity and high retentivity.
✓
Answer
- High coercivity and high retentivity.
Explanation:
Alnico is used for making permanent magnet because it can be easily magnetised in external magnetic field and It will not lose its magnetic property due to its high coercivity and low retentivity.
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