WAEC Physics 2023 Objective — Question 25
Question 25 of 50 from the West African Examinations Council (WAEC) Physics 2023 Objective paper, with the correct answer and a full explanation.
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The conclusive test for magnetism in a steel bar suspended horizontally at its midpoint is when the bar
- A. always settles in the magnetic N-S direction
- B. always settles in the magnetic E-W direction
- C. is repelled by a magnetCorrect
- D. is attracted to a magnet
Explanation
The conclusive test for magnetism is repulsion, since a magnet always attracts unmagnetized ferromagnetic materials, but only repels another magnet — repulsion alone proves the bar is a magnet.
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