Which response uses the correct technical wording for this situation? Context: relay switch circuit measurement. Learning objective: Describe a magnetic compass as containing a small bar magnet.. Which answer is most accurate for Magnetic fields? Distinct revision anchor: fluxcue230a coilcue230b fieldcue230c polecue230d gridcue230e motorcue230f generatorcue230g transformercue230h compasscue230i currentcue230j voltagecue230k forcecue230l.

Magnetic fields: relay switch circuit measurement shows Describe a magnetic compass as containing a small bar magnet. because magnetic effects depend on field direction, current or changing magnetic flux.

Magnetic fields: relay switch circuit measurement shows Describe a magnetic compass as containing a small bar magnet. 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 relay switch circuit measurement detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue230a coilcue230b fieldcue230c polecue230d gridcue230e motorcue230f generatorcue230g transformercue230h compasscue230i currentcue230j voltagecue230k forcecue230l: 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.