Question detail

Which conclusion keeps the magnetism concept boundary clear? Context: classroom plotting compass diagnosis. Learning objective: (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue829a coilcue829b fieldcue829c polecue829d gridcue829e motorcue829f generatorcue829g transformercue829h compasscue829i currentcue829j voltagecue829k forcecue829l.

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

  1. A. Transformers (HT only): classroom plotting compass diagnosis shows (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It treats a permanent magnet as if it only works when current flows. (energy-transfer error).
  3. C. It confuses the magnetic field with an electric field. (field-shape error).
  4. D. It describes energy transfer but misses the force or field interaction. (current-change error).

Answer

Transformers (HT only): classroom plotting compass diagnosis shows (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Transformers (HT only): classroom plotting compass diagnosis shows (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Transformers (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The classroom plotting compass diagnosis detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue829a coilcue829b fieldcue829c polecue829d gridcue829e motorcue829f generatorcue829g transformercue829h compasscue829i currentcue829j voltagecue829k forcecue829l: 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 Transformers (HT only), then explain how it links to a bar magnet and plotting compass practical and the objective to apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission.

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AQA GCSE Physics Induced potential, transformers question detail | ExamCompanion