Which answer avoids the common misconception in this topic? Context: bicycle dynamo turns-ratio. Learning objective: (Physics only) (HT only) State that loudspeakers and headphones use the motor effect.. Which answer is most accurate for Loudspeakers (physics only) (HT only)? Distinct revision anchor: fluxcue490a coilcue490b fieldcue490c polecue490d gridcue490e motorcue490f generatorcue490g transformercue490h compasscue490i currentcue490j voltagecue490k forcecue490l.

Loudspeakers (physics only) (HT only): bicycle dynamo turns-ratio shows (Physics only) (HT only) State that loudspeakers and headphones use the motor effect. because magnetic effects depend on field direction, current or changing magnetic flux.

Loudspeakers (physics only) (HT only): bicycle dynamo turns-ratio shows (Physics only) (HT only) State that loudspeakers and headphones use the motor effect. 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 bicycle dynamo turns-ratio detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue490a coilcue490b fieldcue490c polecue490d gridcue490e motorcue490f generatorcue490g transformercue490h compasscue490i currentcue490j voltagecue490k forcecue490l: 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.