Permanent and induced magnetism, magnetic forces and fields common mistakes

Common mistakes

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a bar magnet and plotting compass practical and the objective to state that the poles of a magnet are the places where magnetic forces are strongest.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a steel core electromagnet demonstration and the objective to describe how two magnets exert forces on each other when brought close together.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a current-carrying wire between magnetic poles and the objective to state that two like magnetic poles repel each other.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a loudspeaker coil moving in a magnetic field and the objective to state that two unlike magnetic poles attract each other.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to an alternator producing an AC output trace and the objective to describe attraction and repulsion between magnetic poles as non-contact forces.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a dynamo producing a DC output trace and the objective to state that a permanent magnet produces its own magnetic field.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a moving-coil microphone investigation and the objective to describe an induced magnet as a material that becomes a magnet when placed in a magnetic field.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a step-up transformer on the National Grid and the objective to state that induced magnetism always causes a force of attraction.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a step-down transformer for a low-voltage device and the objective to state that an induced magnet loses most or all of its magnetism quickly when removed from the magnetic field.

• generator-effect induction: avoid permanent and induced magnets

  Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

  Fix itInstead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a student comparing motor and generator effects and the objective to describe the attraction and repulsion between unlike and like poles for permanent magnets.