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COMEDK2016PhysicsMagnetic Properties of Matter

Material of permanent magnet has

Options

  1. Ahigh retentivity and high coercivity
  2. Blow retentivity and high coercivity
  3. Clow retentivity and low coercivity
  4. Dhigh retentivity and low coercivity

Correct answer

A. high retentivity and high coercivity

Step-by-step solution

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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