Physics 0625 · IGCSE · Simple phenomena of magnetism

Simple phenomena of magnetism — practice question

By what method can a permanent magnet be demagnetised?

  • ACool the magnet for a long time.
  • BPlace it next to another magnet.
  • CSlowly pull it out of a coil connected to an a.c. supply.
  • DSlowly pull it out of a coil connected to a d.c. supply.

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