Question detail
Which conclusion keeps the magnetism concept boundary clear? Context: moving-wire motor effect application. Learning objective: Describe the direction of a magnetic field as the direction of the force on a north pole placed at that point.. Which answer is most accurate for Magnetic fields? Distinct revision anchor: fluxcue217a coilcue217b fieldcue217c polecue217d gridcue217e motorcue217f generatorcue217g transformercue217h compasscue217i currentcue217j voltagecue217k forcecue217l.
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
- A. Magnetic fields: moving-wire motor effect application shows Describe the direction of a magnetic field as the direction of the force on a north pole placed at that point. because magnetic effects depend on field direction, current or changing magnetic flux.
- B. It treats a permanent magnet as if it only works when current flows. (exam-command error).
- C. It confuses the magnetic field with an electric field. (direction error).
- D. It describes energy transfer but misses the force or field interaction. (cause error).
Answer
Magnetic fields: moving-wire motor effect application shows Describe the direction of a magnetic field as the direction of the force on a north pole placed at that point. because magnetic effects depend on field direction, current or changing magnetic flux.
Explanation
Magnetic fields: moving-wire motor effect application shows Describe the direction of a magnetic field as the direction of the force on a north pole placed at that point. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Magnetic fields, uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The moving-wire motor effect application detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue217a coilcue217b fieldcue217c polecue217d gridcue217e motorcue217f generatorcue217g transformercue217h compasscue217i currentcue217j voltagecue217k forcecue217l: 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 Magnetic fields, then explain how it links to a dynamo producing a DC output trace and the objective to describe the direction of a magnetic field as the direction of the force on a north pole placed at that point.
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