Which explanation best links the observation to the physics? Context: laboratory bar magnet cause. Learning objective: (Physics only) (HT only) State that the ratio of the potential differences across the primary and secondary coils depends on the ratio of the number of turns on each coil.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue720a coilcue720b fieldcue720c polecue720d gridcue720e motorcue720f generatorcue720g transformercue720h compasscue720i currentcue720j voltagecue720k forcecue720l.

Transformers (HT only): laboratory bar magnet cause shows (Physics only) (HT only) State that the ratio of the potential differences across the primary and secondary coils depends on the ratio of the number of turns on each coil. because magnetic effects depend on field direction, current or changing magnetic flux.

Transformers (HT only): laboratory bar magnet cause shows (Physics only) (HT only) State that the ratio of the potential differences across the primary and secondary coils depends on the ratio of the number of turns on each coil. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Transformers (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The laboratory bar magnet cause detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue720a coilcue720b fieldcue720c polecue720d gridcue720e motorcue720f generatorcue720g transformercue720h compasscue720i currentcue720j voltagecue720k forcecue720l: 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.