Which explanation best links the observation to the physics? Context: National Grid substation direction. Learning objective: Describe how two magnets exert forces on each other when brought close together.. Which answer is most accurate for Poles of a magnet? Distinct revision anchor: fluxcue108a coilcue108b fieldcue108c polecue108d gridcue108e motorcue108f generatorcue108g transformercue108h compasscue108i currentcue108j voltagecue108k forcecue108l.

Poles of a magnet: National Grid substation direction shows Describe how two magnets exert forces on each other when brought close together. because magnetic effects depend on field direction, current or changing magnetic flux.

Poles of a magnet: National Grid substation direction shows Describe how two magnets exert forces on each other when brought close together. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Poles of a magnet, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The National Grid substation direction detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue108a coilcue108b fieldcue108c polecue108d gridcue108e motorcue108f generatorcue108g transformercue108h compasscue108i currentcue108j voltagecue108k forcecue108l: 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.