JAMB Physics 2011 Objective — Question 41
Question 41 of 49 from the Joint Admissions and Matriculation Board (JAMB) Physics 2011 Objective paper, with the correct answer and a full explanation.
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Which of the following is a property of steel that can be used for making permanent magnets?
- A. A. It can be used for making permanent magnetsCorrect
- B. B. It can be easily magnetized and demagnetized
- C. C. It cannot retain its magnetism longer than iron
- D. D. It can be used for making temporary magnets
Explanation
Steel is less easily magnetized than iron, but once magnetized, it retains its magnetism longer than iron. This is why steel is used for making permanent magnets, while iron is used for temporary magnets.
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