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.

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.

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. 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 step-up transformer demonstration direction detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue689a coilcue689b fieldcue689c polecue689d gridcue689e motorcue689f generatorcue689g transformercue689h compasscue689i currentcue689j voltagecue689k forcecue689l: 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.