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Physics · Oct / Nov 2025 · Paper 11 · Question 26

5054Simple magnetism and magnetic fields

A bar magnet is placed on a sheet of paper. The diagram shows the field lines due to the magnet. A soft-iron bar is placed on the paper on the rectangle marked WZ. The soft-iron bar becomes an induced magnet. What are the magnetic poles at the ends of the soft-iron bar?

  1. Apole at W: N, pole at Z: N
  2. Bpole at W: N, pole at Z: S
  3. Cpole at W: S, pole at Z: N
  4. Dpole at W: S, pole at Z: S

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Correct answer: B. pole at W: N, pole at Z: S

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