COMEDK · Physics · 20. Magnetic Properties of Matter
Material of permanent magnet has
- A high retentivity and high coercivity
- B low retentivity and high coercivity
- C low retentivity and low coercivity
- D high retentivity and low coercivity
Answer & Solution
Correct Answer
(A) high retentivity and high coercivity
Step-by-step Solution
Detailed explanation
Permanent magnet should have high retentivity to persist magnetism on removal of magnetic field. It should also have high coercivity, so that the magnetism is not lost by external magnetic field.
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