Which explanation best links the observation to the physics? Context: National Grid substation efficiency. Learning objective: Draw the magnetic field pattern for a solenoid, showing the direction of the field.. Which answer is most accurate for Electromagnetism? Distinct revision anchor: fluxcue348a coilcue348b fieldcue348c polecue348d gridcue348e motorcue348f generatorcue348g transformercue348h compasscue348i currentcue348j voltagecue348k forcecue348l.

Electromagnetism: National Grid substation efficiency shows Draw the magnetic field pattern for a solenoid, showing the direction of the field. because magnetic effects depend on field direction, current or changing magnetic flux.

Electromagnetism: National Grid substation efficiency shows Draw the magnetic field pattern for a solenoid, showing the direction of the field. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Electromagnetism, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The National Grid substation efficiency detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue348a coilcue348b fieldcue348c polecue348d gridcue348e motorcue348f generatorcue348g transformercue348h compasscue348i currentcue348j voltagecue348k forcecue348l: 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.