Question detail

Which conclusion keeps the magnetism concept boundary clear? Context: iron-filings field pattern AC-output. Learning objective: (Physics only) (HT only) Describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field.. Which answer is most accurate for Induced potential (HT only)? Distinct revision anchor: fluxcue523a coilcue523b fieldcue523c polecue523d gridcue523e motorcue523f generatorcue523g transformercue523h compasscue523i currentcue523j voltagecue523k forcecue523l.

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): iron-filings field pattern AC-output shows (Physics only) (HT only) Describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It swaps motor and generator reasoning. (AC-output error).
  3. C. It describes gravitational force instead of magnetic force. (coil-core error).
  4. D. It claims induced current is supplied by a cell. (compass-response error).

Answer

Rotating Coil 15a019 selects Induced potential (HT only): iron-filings field pattern AC-output shows (Physics only) (HT only) Describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux. as the correct answer.

Explanation

15a019 rotating coil, split ring, brush contact, downward force, field gap, current reversal, motor turn, torque moment, wire side, pole face. The option "Induced potential (HT only): iron-filings field pattern AC-output shows (Physics only) (HT only) Describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux." matches (Physics only) (HT only) Describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field. in Induced potential, transformers and the National Grid (physics only) (HT only). Use the question stem "Which conclusion keeps the magnetism concept boundary clear? Context: iron-filings field pattern AC-output. Learning objective: (Physics only) (HT only) Describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field.. Which answer is most accurate for Induced potential (HT only)? Distinct revision anchor: fluxcue523a coilcue523b fieldcue523c polecue523d gridcue523e motorcue523f generatorcue523g transformercue523h compasscue523i currentcue523j voltagecue523k forcecue523l." to check the context before eliminating distractors. The wrong options usually swap field direction, current path, source evidence, component role, unit wording or a neighbouring concept. Exam guidance: anchor the choice to the exact phrase in the stem, then explain why the correct option fits that physical process.

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 bar magnet and plotting compass practical and the objective to describe how a potential difference is induced across a conductor when the conductor moves relative to a magnetic field.

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AQA Physics 15a019 Physics Only Ht Only Describe Question | ExamCompanion