Question detail
Which response uses the correct technical wording for this situation? Context: split-ring motor kit safety. Learning objective: Describe how the magnetic effect of a current can be demonstrated.. Which answer is most accurate for Electromagnetism? Distinct revision anchor: fluxcue332a coilcue332b fieldcue332c polecue332d gridcue332e motorcue332f generatorcue332g transformercue332h compasscue332i currentcue332j voltagecue332k forcecue332l.
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
- A. Electromagnetism: split-ring motor kit safety shows Describe how the magnetic effect of a current can be demonstrated. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It says field lines travel from south to north outside the magnet. (coil-core error).
- C. It makes AC and DC equivalent. (compass-response error).
- D. It ignores relative motion or changing magnetic flux. (pole-test error).
Answer
Electromagnetism: split-ring motor kit safety shows Describe how the magnetic effect of a current can be demonstrated. because magnetic effects depend on field direction, current or changing magnetic flux.
Explanation
Electromagnetism: split-ring motor kit safety shows Describe how the magnetic effect of a current can be demonstrated. 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 split-ring motor kit safety detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue332a coilcue332b fieldcue332c polecue332d gridcue332e motorcue332f generatorcue332g transformercue332h compasscue332i currentcue332j voltagecue332k forcecue332l: 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 step-down transformer for a low-voltage device and the objective to describe how the magnetic effect of a current can be demonstrated.
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