Question detail

Which answer avoids the common misconception in this topic? Context: wind-turbine generator cause. Learning objective: State that a permanent magnet produces its own magnetic field.. Which answer is most accurate for Poles of a magnet? Distinct revision anchor: fluxcue136a coilcue136b fieldcue136c polecue136d gridcue136e motorcue136f generatorcue136g transformercue136h compasscue136i currentcue136j voltagecue136k forcecue136l.

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: wind-turbine generator cause shows State that a permanent magnet produces its own magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It says field lines travel from south to north outside the magnet. (voltage-change error).
  3. C. It makes AC and DC equivalent. (force-link error).
  4. D. It ignores relative motion or changing magnetic flux. (turns-ratio error).

Answer

Poles of a magnet: wind-turbine generator cause shows State that a permanent magnet produces its own magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Poles of a magnet: wind-turbine generator cause shows State that a permanent magnet produces its own 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 wind-turbine generator cause detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue136a coilcue136b fieldcue136c polecue136d gridcue136e motorcue136f generatorcue136g transformercue136h compasscue136i currentcue136j voltagecue136k forcecue136l: 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 dynamo producing a DC output trace and the objective to state that a permanent magnet produces its own magnetic field.

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