Question detail
Which answer avoids the common misconception in this topic? Context: coil-and-galvanometer induction compass-response. Learning objective: (Physics only) (HT only) Recall the factors that affect the direction of the induced potential difference or induced current.. Which answer is most accurate for Induced potential (HT only)? Distinct revision anchor: fluxcue574a coilcue574b fieldcue574c polecue574d gridcue574e motorcue574f generatorcue574g transformercue574h compasscue574i currentcue574j voltagecue574k forcecue574l.
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): coil-and-galvanometer induction compass-response shows (Physics only) (HT only) Recall the factors that affect the direction of the induced potential difference or induced current. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It reverses the role of primary and secondary coils. (pole-test error).
- C. It assumes transformers work on direct current without changing flux. (load-effect error).
- D. It states the turns ratio changes resistance rather than voltage. (power-link error).
Answer
Induced potential (HT only): coil-and-galvanometer induction compass-response shows (Physics only) (HT only) Recall the factors that affect the direction 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): coil-and-galvanometer induction compass-response shows (Physics only) (HT only) Recall the factors that affect the direction 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 coil-and-galvanometer induction compass-response detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue574a coilcue574b fieldcue574c polecue574d gridcue574e motorcue574f generatorcue574g transformercue574h compasscue574i currentcue574j voltagecue574k forcecue574l: 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 step-up transformer on the National Grid and the objective to recall the factors that affect the direction of the induced potential difference or induced current.
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