Question detail

Which response uses the correct technical wording for this situation? Context: relay switch circuit evidence. Learning objective: State that an induced magnet loses most or all of its magnetism quickly when removed from the magnetic field.. Which answer is most accurate for Poles of a magnet? Distinct revision anchor: fluxcue158a coilcue158b fieldcue158c polecue158d gridcue158e motorcue158f generatorcue158g transformercue158h compasscue158i currentcue158j voltagecue158k forcecue158l.

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

At a glance

MCQ

Type

practice

Style

Topic

Permanent and induced magnetism, magnetic forces and fields

Question

  1. A. Poles of a magnet: relay switch circuit evidence shows State that an induced magnet loses most or all of its magnetism quickly when removed from the magnetic field. 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

Poles of a magnet: relay switch circuit evidence shows State that an induced magnet loses most or all of its magnetism quickly when removed from the magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Poles of a magnet: relay switch circuit evidence shows State that an induced magnet loses most or all of its magnetism quickly when removed from the magnetic field. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Poles of a magnet, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The relay switch circuit evidence detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue158a coilcue158b fieldcue158c polecue158d gridcue158e motorcue158f generatorcue158g transformercue158h compasscue158i currentcue158j voltagecue158k forcecue158l: 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

generator-effect induction: avoid permanent and induced magnets

Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.

Instead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a step-down transformer for a low-voltage device and the objective to state that an induced magnet loses most or all of its magnetism quickly when removed from the magnetic field.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 4 attempted