Select the statement that would earn credit in an AQA GCSE Physics answer. Context: overhead cable transmission exam-command. Learning objective: (Physics only) (HT only) Link movement of a coil in a magnetic field to induced potential difference in a microphone.. Which answer is most accurate for Microphones (HT only)? Distinct revision anchor: fluxcue671a coilcue671b fieldcue671c polecue671d gridcue671e motorcue671f generatorcue671g transformercue671h compasscue671i currentcue671j voltagecue671k forcecue671l.

Microphones (HT only): overhead cable transmission exam-command shows (Physics only) (HT only) Link movement of a coil in a magnetic field to induced potential difference in a microphone. because magnetic effects depend on field direction, current or changing magnetic flux.

Microphones (HT only): overhead cable transmission exam-command shows (Physics only) (HT only) Link movement of a coil in a magnetic field to induced potential difference in a microphone. 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 overhead cable transmission exam-command detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue671a coilcue671b fieldcue671c polecue671d gridcue671e motorcue671f generatorcue671g transformercue671h compasscue671i currentcue671j voltagecue671k forcecue671l: 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.