Question detail

Which response uses the correct technical wording for this situation? Context: relay switch circuit coil-core. Learning objective: (Physics only) (HT only) Describe induced potential difference and induced current as the generator effect.. Which answer is most accurate for Induced potential (HT only)? Distinct revision anchor: fluxcue542a coilcue542b fieldcue542c polecue542d gridcue542e motorcue542f generatorcue542g transformercue542h compasscue542i currentcue542j voltagecue542k forcecue542l.

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

  1. A. Induced potential (HT only): relay switch circuit coil-core shows (Physics only) (HT only) Describe induced potential difference and induced current as the generator effect. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It reverses the role of primary and secondary coils. (field-shape error).
  3. C. It assumes transformers work on direct current without changing flux. (current-change error).
  4. D. It states the turns ratio changes resistance rather than voltage. (voltage-change error).

Answer

Induced potential (HT only): relay switch circuit coil-core shows (Physics only) (HT only) Describe induced potential difference and induced current as the generator effect. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Induced potential (HT only): relay switch circuit coil-core shows (Physics only) (HT only) Describe induced potential difference and induced current as the generator effect. 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 relay switch circuit coil-core detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue542a coilcue542b fieldcue542c polecue542d gridcue542e motorcue542f generatorcue542g transformercue542h compasscue542i currentcue542j voltagecue542k forcecue542l: 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 Induced potential (HT only), then explain how it links to a loudspeaker coil moving in a magnetic field and the objective to describe induced potential difference and induced current as the generator effect.

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