Exam-style question
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Select the statement that would earn credit in an AQA GCSE Physics answer. Context: step-up transformer demonstration direction. Learning objective: (Physics only) (HT only) State that iron is used in the core because it is easily magnetised.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue689a coilcue689b fieldcue689c polecue689d gridcue689e motorcue689f generatorcue689g transformercue689h compasscue689i currentcue689j voltagecue689k forcecue689l.
- A.Transformers (HT only): step-up transformer demonstration direction shows (Physics only) (HT only) State that iron is used in the core because it is easily magnetised. 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).
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