JAMB Physics
Which of the following is a property of steel?
a.
It can easily be magnetized and demagnetized
b.
It can be used for making permanent magnets
c.
It cannot retain its magnetism longer than iron
d.
It can be used for making temporary magnets
Correct answer: B
Steel is not easily magnetized and not easily demagnetized. This makes it a good candidate for the production of permanent magnets. A metal that is easily demagnetized cannot be used to make permanent magnets as the magnetism will wear out quickly.
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