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JAMB Physics 1981 Question 9

Question 9

Magnetism

Which of the following elements are real magnetic materials?

  1. A.Iron, steel and nickel
  2. B.Copper, steel and iron
  3. C.Lead, iron and brass
  4. D.Glass, lead and steel
  5. E.Stone, air and iron.
Show the answer and explanation

Answer: A (Iron, steel and nickel)

Explanation

Iron, steel (mostly iron) and nickel are ferromagnetic. Copper, lead, brass, glass, stone and air are not magnetic materials.