Select the statement that would earn credit in an AQA GCSE Physics answer. Context: power-station transformer application. Learning objective: Describe how magnetic field strength depends on distance from the magnet.. Which answer is most accurate for Magnetic fields? Distinct revision anchor: fluxcue203a coilcue203b fieldcue203c polecue203d gridcue203e motorcue203f generatorcue203g transformercue203h compasscue203i currentcue203j voltagecue203k forcecue203l.

Magnetic fields: power-station transformer application shows Describe how magnetic field strength depends on distance from the magnet. because magnetic effects depend on field direction, current or changing magnetic flux.

Magnetic fields: power-station transformer application shows Describe how magnetic field strength depends on distance from the magnet. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Magnetic fields, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The power-station transformer application detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue203a coilcue203b fieldcue203c polecue203d gridcue203e motorcue203f generatorcue203g transformercue203h compasscue203i currentcue203j voltagecue203k forcecue203l: 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.