Question detail
Which explanation best links the observation to the physics? Context: scrapyard lifting magnet compass-response. Learning objective: (Physics only) (HT only) Explain that the original change may be the movement of the conductor or the change in magnetic field.. Which answer is most accurate for Induced potential (HT only)? Distinct revision anchor: fluxcue558a coilcue558b fieldcue558c polecue558d gridcue558e motorcue558f generatorcue558g transformercue558h compasscue558i currentcue558j voltagecue558k forcecue558l.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Induced potential, transformers and the National Grid (physics only) (HT only)
Question
- A. Induced potential (HT only): scrapyard lifting magnet compass-response shows (Physics only) (HT only) Explain that the original change may be the movement of the conductor or the change in magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It reverses the role of primary and secondary coils. (application error).
- C. It assumes transformers work on direct current without changing flux. (measurement error).
- D. It states the turns ratio changes resistance rather than voltage. (diagnosis error).
Answer
Induced potential (HT only): scrapyard lifting magnet compass-response shows (Physics only) (HT only) Explain that the original change may be the movement of the conductor or the change in magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.
Explanation
Induced potential (HT only): scrapyard lifting magnet compass-response shows (Physics only) (HT only) Explain that the original change may be the movement of the conductor or the change in magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Induced potential (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The scrapyard lifting magnet compass-response detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue558a coilcue558b fieldcue558c polecue558d gridcue558e motorcue558f generatorcue558g transformercue558h compasscue558i currentcue558j voltagecue558k forcecue558l: 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
National Grid transformer reasoning: avoid magnetic field...
Treating magnetic field direction and force direction as interchangeable when answering about National Grid transformer reasoning.
Instead, identify the exact Unit 4.7 idea in Induced potential (HT only), then explain how it links to a dynamo producing a DC output trace and the objective to explain that the original change may be the movement of the conductor or the change in magnetic field.
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