Question detail

Which response uses the correct technical wording for this situation? Context: alternator output trace cause. Learning objective: Describe an induced magnet as a material that becomes a magnet when placed in a magnetic field.. Which answer is most accurate for Poles of a magnet? Distinct revision anchor: fluxcue146a coilcue146b fieldcue146c polecue146d gridcue146e motorcue146f generatorcue146g transformercue146h compasscue146i currentcue146j voltagecue146k forcecue146l.

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Permanent and induced magnetism, magnetic forces and fields

Question

  1. A. Poles of a magnet: alternator output trace cause shows Describe an induced magnet as a material that becomes a magnet when placed in a magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It reverses the role of primary and secondary coils. (direction error).
  3. C. It assumes transformers work on direct current without changing flux. (cause error).
  4. D. It states the turns ratio changes resistance rather than voltage. (evidence error).

Answer

Poles of a magnet: alternator output trace cause shows Describe an induced magnet as a material that becomes a magnet when placed in a magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Poles of a magnet: alternator output trace cause shows Describe an induced magnet as a material that becomes a magnet when placed in a magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Poles of a magnet, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The alternator output trace cause detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue146a coilcue146b fieldcue146c polecue146d gridcue146e motorcue146f generatorcue146g transformercue146h compasscue146i currentcue146j voltagecue146k forcecue146l: in the motor effect, the force is perpendicular to the current and magnetic field; in a generator, relative motion or a changing magnetic field induces a potential difference or induced current; outside a magnet, magnetic field lines go from north to south; AC alternating current changes direction, while DC direct current flows in one direction and needs a commutator in a DC generator context.

Common mistake

generator-effect induction: avoid permanent and induced magnets

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

Instead, 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.

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