Question detail
Which conclusion keeps the magnetism concept boundary clear? Context: iron-filings field pattern load-effect. Learning objective: (Physics only) (HT only) Draw 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: fluxcue619a coilcue619b fieldcue619c polecue619d gridcue619e motorcue619f generatorcue619g transformercue619h compasscue619i currentcue619j voltagecue619k forcecue619l.
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): iron-filings field pattern load-effect shows (Physics only) (HT only) Draw graphs of potential difference generated in a coil against time. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It swaps motor and generator reasoning. (AC-output error).
- C. It describes gravitational force instead of magnetic force. (coil-core error).
- D. It claims induced current is supplied by a cell. (compass-response error).
Answer
Uses of the generator effect (HT only): iron-filings field pattern load-effect shows (Physics only) (HT only) Draw 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): iron-filings field pattern load-effect shows (Physics only) (HT only) Draw 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 iron-filings field pattern load-effect detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue619a coilcue619b fieldcue619c polecue619d gridcue619e motorcue619f generatorcue619g transformercue619h compasscue619i currentcue619j voltagecue619k forcecue619l: 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 a loudspeaker coil moving in a magnetic field and the objective to draw graphs of potential difference generated in a coil against time.
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