Question detail

Which answer avoids the common misconception in this topic? Context: temporary induced magnet prediction. Learning objective: Describe how the strength of the magnetic field around a wire depends on distance from the wire.. Which answer is most accurate for Electromagnetism? Distinct revision anchor: fluxcue292a coilcue292b fieldcue292c polecue292d gridcue292e motorcue292f generatorcue292g transformercue292h compasscue292i currentcue292j voltagecue292k forcecue292l.

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. Electromagnetism: temporary induced magnet prediction shows Describe how the strength of the magnetic field around a wire depends on distance from the wire. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It says field lines travel from south to north outside the magnet. (evidence error).
  3. C. It makes AC and DC equivalent. (boundary error).
  4. D. It ignores relative motion or changing magnetic flux. (application error).

Answer

Electromagnetism: temporary induced magnet prediction shows Describe how the strength of the magnetic field around a wire depends on distance from the wire. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Electromagnetism: temporary induced magnet prediction shows Describe how the strength of the magnetic field around a wire depends on distance from the wire. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Electromagnetism, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The temporary induced magnet prediction detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue292a coilcue292b fieldcue292c polecue292d gridcue292e motorcue292f generatorcue292g transformercue292h compasscue292i currentcue292j voltagecue292k forcecue292l: 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 Electromagnetism, then explain how it links to a current-carrying wire between magnetic poles and the objective to describe how the strength of the magnetic field around a wire depends on distance from the wire.

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