Question detail

Which option gives the strongest diagnostic reason? Context: loudspeaker cone test 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: fluxcue567a coilcue567b fieldcue567c polecue567d gridcue567e motorcue567f generatorcue567g transformercue567h compasscue567i currentcue567j voltagecue567k forcecue567l.

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): loudspeaker cone test 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.
  2. B. It swaps motor and generator reasoning. (current-change error).
  3. C. It describes gravitational force instead of magnetic force. (voltage-change error).
  4. D. It claims induced current is supplied by a cell. (force-link error).

Answer

Induced potential (HT only): loudspeaker cone test 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): loudspeaker cone test 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 loudspeaker cone test compass-response detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue567a coilcue567b fieldcue567c polecue567d gridcue567e motorcue567f generatorcue567g transformercue567h compasscue567i currentcue567j voltagecue567k forcecue567l: 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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AQA GCSE Physics Induced potential, transformers question detail | ExamCompanion