Which option gives the strongest diagnostic reason? Context: primary-secondary coil comparison turns-ratio. Learning objective: (Physics only) (HT only) Explain how headphones use the motor effect to produce sound.. Which answer is most accurate for Loudspeakers (physics only) (HT only)? Distinct revision anchor: fluxcue507a coilcue507b fieldcue507c polecue507d gridcue507e motorcue507f generatorcue507g transformercue507h compasscue507i currentcue507j voltagecue507k forcecue507l.

Loudspeakers (physics only) (HT only): primary-secondary coil comparison turns-ratio shows (Physics only) (HT only) Explain how headphones use the motor effect to produce sound. because magnetic effects depend on field direction, current or changing magnetic flux.

Loudspeakers (physics only) (HT only): primary-secondary coil comparison turns-ratio shows (Physics only) (HT only) Explain how headphones use the motor effect to produce sound. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Loudspeakers (physics only) (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The primary-secondary coil comparison turns-ratio detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue507a coilcue507b fieldcue507c polecue507d gridcue507e motorcue507f generatorcue507g transformercue507h compasscue507i currentcue507j voltagecue507k forcecue507l: 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.