Question detail
Which option gives the strongest diagnostic reason? Context: solenoid strength investigation application. Learning objective: (Physics only) (HT only) Identify Vp x Ip as power input and Vs x Is as power output.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue789a coilcue789b fieldcue789c polecue789d gridcue789e motorcue789f generatorcue789g transformercue789h compasscue789i currentcue789j voltagecue789k forcecue789l.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Induced potential, transformers and the National Grid (physics only) (HT only)
Question
- A. Transformers (HT only): solenoid strength investigation application shows (Physics only) (HT only) Identify Vp x Ip as power input and Vs x Is as power output. 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. (compass-response error).
- C. It confuses the magnetic field with an electric field. (pole-test error).
- D. It describes energy transfer but misses the force or field interaction. (load-effect error).
Answer
Transformers (HT only): solenoid strength investigation application shows (Physics only) (HT only) Identify Vp x Ip as power input and Vs x Is as power output. because magnetic effects depend on field direction, current or changing magnetic flux.
Explanation
Transformers (HT only): solenoid strength investigation application shows (Physics only) (HT only) Identify Vp x Ip as power input and Vs x Is as power output. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Transformers (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The solenoid strength investigation application detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue789a coilcue789b fieldcue789c polecue789d gridcue789e motorcue789f generatorcue789g transformercue789h compasscue789i currentcue789j voltagecue789k forcecue789l: 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
National Grid transformer reasoning: avoid magnetic field...
Treating magnetic field direction and force direction as interchangeable when answering about National Grid transformer reasoning.
Instead, identify the exact Unit 4.7 idea in Transformers (HT only), then explain how it links to a dynamo producing a DC output trace and the objective to identify Vp x Ip as power input and Vs x Is as power output.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.
