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PHYSICS

JAMB 2020 - Question 32

Physics 2020 JAMB Past Questions - Question 32: Steel is more suitable for permanent magnet than iron because the former

Choose the correct answers from the options given.

Steel is more suitable for permanent magnet than iron because the former

A: is easily demagnetized by shaking vigorously

B: is an alloy of many metals

C: is easily magnetised by alternating current through one cycle

D: retains magnetism more than iron

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Correct Answer

Explanation

has a higher magnetic permeability and can retain its magnetization for a longer period of time. This makes steel a better choice for creating permanent magnets compared to iron.