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Physics · Oct / Nov 2017 · Paper 11 · Question 27

5054Simple magnetism and magnetic fields

The diagram shows a sensitive device surrounded by a shield that prevents the magnetic field from reaching the device. How does the shield protect the device?

  1. AIt channels the magnetic field around the shield until it emerges on the right-hand side.
  2. BIts left-hand side absorbs the magnetic field.
  3. CIts left-hand side reflects the magnetic field.
  4. DIts left-hand side scatters the magnetic field in all directions.

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Correct answer: A. It channels the magnetic field around the shield until it emerges on the right-hand side.

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