Question detail
Select the statement that would earn credit in an AQA GCSE Physics answer. Context: power-station transformer compass-response. Learning objective: (Physics only) (HT only) Recall the factors that affect the size of the induced potential difference or induced current.. Which answer is most accurate for Induced potential (HT only)? Distinct revision anchor: fluxcue563a coilcue563b fieldcue563c polecue563d gridcue563e motorcue563f generatorcue563g transformercue563h compasscue563i currentcue563j voltagecue563k forcecue563l.
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. Induced potential (HT only): power-station transformer compass-response shows (Physics only) (HT only) Recall the factors that affect the size of the induced potential difference or induced current. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It swaps motor and generator reasoning. (safety error).
- C. It describes gravitational force instead of magnetic force. (efficiency error).
- D. It claims induced current is supplied by a cell. (energy-transfer error).
Answer
Induced potential (HT only): power-station transformer compass-response shows (Physics only) (HT only) Recall the factors that affect the size of the induced potential difference or induced current. because magnetic effects depend on field direction, current or changing magnetic flux.
Explanation
Induced potential (HT only): power-station transformer compass-response shows (Physics only) (HT only) Recall the factors that affect the size of the induced potential difference or induced current. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Induced potential (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The power-station transformer compass-response detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue563a coilcue563b fieldcue563c polecue563d gridcue563e motorcue563f generatorcue563g transformercue563h compasscue563i currentcue563j voltagecue563k forcecue563l: 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 AC and DC
Treating AC and DC as interchangeable when answering about National Grid transformer reasoning.
Instead, identify the exact Unit 4.7 idea in Induced potential (HT only), then explain how it links to a moving-coil microphone investigation and the objective to recall the factors that affect the size of the induced potential difference or induced current.
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