Which option gives the strongest diagnostic reason? Context: solenoid strength investigation direction. Learning objective: (Physics only) (HT only) State that iron is used in the core because it is easily magnetised.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue693a coilcue693b fieldcue693c polecue693d gridcue693e motorcue693f generatorcue693g transformercue693h compasscue693i currentcue693j voltagecue693k forcecue693l.

Transformers (HT only): solenoid strength investigation direction shows (Physics only) (HT only) State that iron is used in the core because it is easily magnetised. because magnetic effects depend on field direction, current or changing magnetic flux.

Transformers (HT only): solenoid strength investigation direction shows (Physics only) (HT only) State that iron is used in the core because it is easily magnetised. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Transformers (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The solenoid strength investigation direction detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue693a coilcue693b fieldcue693c polecue693d gridcue693e motorcue693f generatorcue693g transformercue693h compasscue693i currentcue693j voltagecue693k forcecue693l: 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.