Which explanation best links the observation to the physics? Context: National Grid substation force-link. Learning objective: (HT only) Explain how the force on a conductor in a magnetic field causes rotation of the coil in an electric motor.. Which answer is most accurate for Electric motors (HT only)? Distinct revision anchor: fluxcue468a coilcue468b fieldcue468c polecue468d gridcue468e motorcue468f generatorcue468g transformercue468h compasscue468i currentcue468j voltagecue468k forcecue468l.

Electric motors (HT only): National Grid substation force-link shows (HT only) Explain how the force on a conductor in a magnetic field causes rotation of the coil in an electric motor. because magnetic effects depend on field direction, current or changing magnetic flux.

Electric motors (HT only): National Grid substation force-link shows (HT only) Explain how the force on a conductor in a magnetic field causes rotation of the coil in an electric motor. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Electric motors (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The National Grid substation force-link detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue468a coilcue468b fieldcue468c polecue468d gridcue468e motorcue468f generatorcue468g transformercue468h compasscue468i currentcue468j voltagecue468k forcecue468l: 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.