Select the statement that would earn credit in an AQA GCSE Physics answer. Context: bench-top compass mapping diagnosis. Learning objective: Describe how a compass needle points in the direction of the Earth's magnetic field.. Which answer is most accurate for Magnetic fields? Distinct revision anchor: fluxcue245a coilcue245b fieldcue245c polecue245d gridcue245e motorcue245f generatorcue245g transformercue245h compasscue245i currentcue245j voltagecue245k forcecue245l.

Magnetic fields: bench-top compass mapping diagnosis shows Describe how a compass needle points in the direction of the Earth's magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.

Magnetic fields: bench-top compass mapping diagnosis shows Describe how a compass needle points in the direction of the Earth's magnetic field. 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 bench-top compass mapping diagnosis detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue245a coilcue245b fieldcue245c polecue245d gridcue245e motorcue245f generatorcue245g transformercue245h compasscue245i currentcue245j voltagecue245k forcecue245l: 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.