Question detail

Which conclusion keeps the magnetism concept boundary clear? Context: school bell electromagnet field-shape. Learning objective: (HT only) State that the magnet producing the field and the conductor exert a force on each other.. Which answer is most accurate for Fleming's left-hand rule (HT only)? Distinct revision anchor: fluxcue391a coilcue391b fieldcue391c polecue391d gridcue391e motorcue391f generatorcue391g transformercue391h compasscue391i currentcue391j voltagecue391k forcecue391l.

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

The motor effect

Question

  1. A. Fleming's left-hand rule (HT only): school bell electromagnet field-shape shows (HT only) State that the magnet producing the field and the conductor exert a force on each other. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It swaps motor and generator reasoning. (measurement error).
  3. C. It describes gravitational force instead of magnetic force. (diagnosis error).
  4. D. It claims induced current is supplied by a cell. (prediction error).

Answer

Fleming's left-hand rule (HT only): school bell electromagnet field-shape shows (HT only) State that the magnet producing the field and the conductor exert a force on each other. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Fleming's left-hand rule (HT only): school bell electromagnet field-shape shows (HT only) State that the magnet producing the field and the conductor exert a force on each other. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Fleming's left-hand rule (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The school bell electromagnet field-shape detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue391a coilcue391b fieldcue391c polecue391d gridcue391e motorcue391f generatorcue391g transformercue391h compasscue391i currentcue391j voltagecue391k forcecue391l: 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

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a dynamo producing a DC output trace and the objective to state that the magnet producing the field and the conductor exert a force on each other.

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analysis MCQ 4: a force on each other. | The motor effect | AQA… | ExamCompanion