Which explanation best links the observation to the physics? Context: laboratory bar magnet power-link. Learning objective: (Physics only) (HT only) State that microphones use the generator effect.. Which answer is most accurate for Microphones (HT only)? Distinct revision anchor: fluxcue648a coilcue648b fieldcue648c polecue648d gridcue648e motorcue648f generatorcue648g transformercue648h compasscue648i currentcue648j voltagecue648k forcecue648l.

Microphones (HT only): laboratory bar magnet power-link shows (Physics only) (HT only) State that microphones use the generator effect. because magnetic effects depend on field direction, current or changing magnetic flux.

Microphones (HT only): laboratory bar magnet power-link shows (Physics only) (HT only) State that microphones use the generator effect. 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 laboratory bar magnet power-link detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue648a coilcue648b fieldcue648c polecue648d gridcue648e motorcue648f generatorcue648g transformercue648h compasscue648i currentcue648j voltagecue648k forcecue648l: 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.