MCQ
The materials suitable for making electromagnets should have
- AHigh retentivity and high coercivity
- BHigh retentivity and low coercivity
- ✓Low retentivity and low coercivity
- DLow retentivity and high coercivity
✓
Answer
Correct option: C.
Low retentivity and low coercivity
c
Electro magnet should be amenable to magnetisation and demagnetization Retenivity should be low and coercivity should be low
Electro magnet should be amenable to magnetisation and demagnetization Retenivity should be low and coercivity should be low
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