Which explanation best links the observation to the physics? Context: step-down charger transformer evidence. Learning objective: (Physics only) (HT only) Identify np and ns as the number of turns on the primary and secondary coils.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue738a coilcue738b fieldcue738c polecue738d gridcue738e motorcue738f generatorcue738g transformercue738h compasscue738i currentcue738j voltagecue738k forcecue738l.

Transformers (HT only): step-down charger transformer evidence shows (Physics only) (HT only) Identify np and ns as the number of turns on the primary and secondary coils. because magnetic effects depend on field direction, current or changing magnetic flux.

Transformers (HT only): step-down charger transformer evidence shows (Physics only) (HT only) Identify np and ns as the number of turns on the primary and secondary coils. 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 evidence detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue738a coilcue738b fieldcue738c polecue738d gridcue738e motorcue738f generatorcue738g transformercue738h compasscue738i currentcue738j voltagecue738k forcecue738l: 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.