COMEDK · Physics · 20. Magnetic Properties of Matter
Steel is preferred to soft iron for making permanent magnets because,
- A Permeability of steel is slightly greater than soft iron
- B Steel is more paramagnetic
- C Steel has more coercivity than soft iron
- D Susceptibility of steel is less than one
Answer & Solution
Correct Answer
(C) Steel has more coercivity than soft iron
Step-by-step Solution
Detailed explanation
Permanent magnets are materials that retain their magnetic properties even after the external magnetizing field is removed. This property is known as retentivity. For a material to be a good permanent magnet, it must have high retentivity and high coercivity. High coercivity…
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