Question detail

Which answer avoids the common misconception in this topic? Context: wind-turbine generator comparison. Learning objective: State that the magnetic field inside a solenoid is strong and uniform.. Which answer is most accurate for Electromagnetism? Distinct revision anchor: fluxcue304a coilcue304b fieldcue304c polecue304d gridcue304e motorcue304f generatorcue304g transformercue304h compasscue304i currentcue304j voltagecue304k forcecue304l.

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: wind-turbine generator comparison shows State that the magnetic field inside a solenoid is strong and uniform. 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. (voltage-change error).
  3. C. It makes AC and DC equivalent. (force-link error).
  4. D. It ignores relative motion or changing magnetic flux. (turns-ratio error).

Answer

Electromagnetism: wind-turbine generator comparison shows State that the magnetic field inside a solenoid is strong and uniform. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Electromagnetism: wind-turbine generator comparison shows State that the magnetic field inside a solenoid is strong and uniform. 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 wind-turbine generator comparison detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue304a coilcue304b fieldcue304c polecue304d gridcue304e motorcue304f generatorcue304g transformercue304h compasscue304i currentcue304j voltagecue304k forcecue304l: 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 an alternator producing an AC output trace and the objective to state that the magnetic field inside a solenoid is strong and uniform.

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