Question detail
Which answer avoids the common misconception in this topic? Context: temporary induced magnet load-effect. Learning objective: (Physics only) (HT only) Interpret graphs of potential difference generated in a coil against time.. Which answer is most accurate for Uses of the generator effect (HT only)? Distinct revision anchor: fluxcue628a coilcue628b fieldcue628c polecue628d gridcue628e motorcue628f generatorcue628g transformercue628h compasscue628i currentcue628j voltagecue628k forcecue628l.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Induced potential, transformers and the National Grid (physics only) (HT only)
Question
- A. Uses of the generator effect (HT only): temporary induced magnet load-effect shows (Physics only) (HT only) Interpret graphs of potential difference generated in a coil against time. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It says field lines travel from south to north outside the magnet. (evidence error).
- C. It makes AC and DC equivalent. (boundary error).
- D. It ignores relative motion or changing magnetic flux. (application error).
Answer
Uses of the generator effect (HT only): temporary induced magnet load-effect shows (Physics only) (HT only) Interpret graphs of potential difference generated in a coil against time. because magnetic effects depend on field direction, current or changing magnetic flux.
Explanation
Uses of the generator effect (HT only): temporary induced magnet load-effect shows (Physics only) (HT only) Interpret graphs of potential difference generated in a coil against time. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Uses of the generator effect (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The temporary induced magnet load-effect detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue628a coilcue628b fieldcue628c polecue628d gridcue628e motorcue628f generatorcue628g transformercue628h compasscue628i currentcue628j voltagecue628k forcecue628l: 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.
Common mistake
National Grid transformer reasoning: avoid motors and generators
Treating motors and generators as interchangeable when answering about National Grid transformer reasoning.
Instead, identify the exact Unit 4.7 idea in Uses of the generator effect (HT only), then explain how it links to an alternator producing an AC output trace and the objective to interpret graphs of potential difference generated in a coil against time.
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