Which option gives the strongest diagnostic reason? Context: phone speaker coil diagnosis. Learning objective: Describe how to plot the magnetic field pattern of a magnet using a compass.. Which answer is most accurate for Magnetic fields? Distinct revision anchor: fluxcue249a coilcue249b fieldcue249c polecue249d gridcue249e motorcue249f generatorcue249g transformercue249h compasscue249i currentcue249j voltagecue249k forcecue249l.

Magnetic fields: phone speaker coil diagnosis shows Describe how to plot the magnetic field pattern of a magnet using a compass. because magnetic effects depend on field direction, current or changing magnetic flux.

Magnetic fields: phone speaker coil diagnosis shows Describe how to plot the magnetic field pattern of a magnet using a compass. 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 phone speaker coil diagnosis detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue249a coilcue249b fieldcue249c polecue249d gridcue249e motorcue249f generatorcue249g transformercue249h compasscue249i currentcue249j voltagecue249k forcecue249l: 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.