Which option gives the strongest diagnostic reason? Context: primary-secondary coil comparison boundary. Learning objective: State that the force between a magnet and a magnetic material is always attraction.. Which answer is most accurate for Magnetic fields? Distinct revision anchor: fluxcue195a coilcue195b fieldcue195c polecue195d gridcue195e motorcue195f generatorcue195g transformercue195h compasscue195i currentcue195j voltagecue195k forcecue195l.

Magnetic fields: primary-secondary coil comparison boundary shows State that the force between a magnet and a magnetic material is always attraction. because magnetic effects depend on field direction, current or changing magnetic flux.

Magnetic fields: primary-secondary coil comparison boundary shows State that the force between a magnet and a magnetic material is always attraction. 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 primary-secondary coil comparison boundary detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue195a coilcue195b fieldcue195c polecue195d gridcue195e motorcue195f generatorcue195g transformercue195h compasscue195i currentcue195j voltagecue195k forcecue195l: 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.