Which explanation best links the observation to the physics? Context: step-down charger transformer 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: fluxcue690a coilcue690b fieldcue690c polecue690d gridcue690e motorcue690f generatorcue690g transformercue690h compasscue690i currentcue690j voltagecue690k forcecue690l.

Transformers (HT only): step-down charger transformer 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-down charger transformer 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-down charger transformer direction detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue690a coilcue690b fieldcue690c polecue690d gridcue690e motorcue690f generatorcue690g transformercue690h compasscue690i currentcue690j voltagecue690k forcecue690l: 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.