Which conclusion keeps the magnetism concept boundary clear? Context: moving-wire motor effect measurement. 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: fluxcue241a coilcue241b fieldcue241c polecue241d gridcue241e motorcue241f generatorcue241g transformercue241h compasscue241i currentcue241j voltagecue241k forcecue241l.

Magnetic fields: moving-wire motor effect measurement 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: moving-wire motor effect measurement 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 moving-wire motor effect measurement detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue241a coilcue241b fieldcue241c polecue241d gridcue241e motorcue241f generatorcue241g transformercue241h compasscue241i currentcue241j voltagecue241k forcecue241l: 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.