Which explanation best links the observation to the physics? Context: laboratory bar magnet turns-ratio. Learning objective: (Physics only) (HT only) Explain how a moving-coil loudspeaker works.. Which answer is most accurate for Loudspeakers (physics only) (HT only)? Distinct revision anchor: fluxcue504a coilcue504b fieldcue504c polecue504d gridcue504e motorcue504f generatorcue504g transformercue504h compasscue504i currentcue504j voltagecue504k forcecue504l.

Loudspeakers (physics only) (HT only): laboratory bar magnet turns-ratio shows (Physics only) (HT only) Explain how a moving-coil loudspeaker works. because magnetic effects depend on field direction, current or changing magnetic flux.

Loudspeakers (physics only) (HT only): laboratory bar magnet turns-ratio shows (Physics only) (HT only) Explain how a moving-coil loudspeaker works. 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 laboratory bar magnet turns-ratio detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue504a coilcue504b fieldcue504c polecue504d gridcue504e motorcue504f generatorcue504g transformercue504h compasscue504i currentcue504j voltagecue504k forcecue504l: 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.