Question detail
Select the statement that would earn credit in an AQA GCSE Physics answer. Context: step-up transformer demonstration 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: fluxcue137a coilcue137b fieldcue137c polecue137d gridcue137e motorcue137f generatorcue137g transformercue137h compasscue137i currentcue137j voltagecue137k forcecue137l.
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
- A. Poles of a magnet: step-up transformer demonstration cause shows State that a permanent magnet produces its own magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It treats a permanent magnet as if it only works when current flows. (force-link error).
- C. It confuses the magnetic field with an electric field. (turns-ratio error).
- D. It describes energy transfer but misses the force or field interaction. (AC-output error).
Answer
Poles of a magnet: step-up transformer demonstration 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: step-up transformer demonstration 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 step-up transformer demonstration cause detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue137a coilcue137b fieldcue137c polecue137d gridcue137e motorcue137f generatorcue137g transformercue137h compasscue137i currentcue137j voltagecue137k forcecue137l: 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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