Which response uses the correct technical wording for this situation? Context: model railway motor exam-command. Learning objective: (Physics only) (HT only) Describe how pressure variations in sound waves are converted into variations in current in electrical circuits.. Which answer is most accurate for Microphones (HT only)? Distinct revision anchor: fluxcue656a coilcue656b fieldcue656c polecue656d gridcue656e motorcue656f generatorcue656g transformercue656h compasscue656i currentcue656j voltagecue656k forcecue656l.

Microphones (HT only): model railway motor exam-command shows (Physics only) (HT only) Describe how pressure variations in sound waves are converted into variations in current in electrical circuits. because magnetic effects depend on field direction, current or changing magnetic flux.

Microphones (HT only): model railway motor exam-command shows (Physics only) (HT only) Describe how pressure variations in sound waves are converted into variations in current in electrical circuits. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Microphones (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The model railway motor exam-command detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue656a coilcue656b fieldcue656c polecue656d gridcue656e motorcue656f generatorcue656g transformercue656h compasscue656i currentcue656j voltagecue656k forcecue656l: 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.