MCQ
Permanent magnet has properties-retentivity and coercivity respectively:
- Alow, low
- Bhigh, low
- Clow, high
- ✓high, high
✓
Answer
Correct option: D.
high, high
(D)high, high
Explanation:
The material for a permanent magnet should have high retentivity (so that magnet is strong) and high coercivity (so that magnetism is not wiped out by strong magnetic fields).
Explanation:
The material for a permanent magnet should have high retentivity (so that magnet is strong) and high coercivity (so that magnetism is not wiped out by strong magnetic fields).
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