Exam-style question
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In the magnetic-flux experiment scenario, a coil is rotated near a magnet while the induced emf is measured. Which option best applies the AQA A-Level Physics objective to calculate gravitational field strength around spherical masses. while avoiding missing the change in flux linkage?.
- A.field-case-55: Apply Calculate gravitational field strength around spherical masses. within Gravitational field strength.
- B.field-case-55: Treat Gravitational field strength as separate from Gravitational fields, so the measured field idea is not used.
- C.field-case-55: Choose a memorised equation without checking direction, sign, field geometry or units.
- D.field-case-55: Replace the A-Level fields reasoning with a broad GCSE label only.
Model answer
What a good answer should say
- The correct option is field-case-55: Apply Calculate gravitational field strength around spherical masses.
- within Gravitational field strength.
Explanation
Why this works
It is correct because it keeps the reasoning inside Gravitational field strength and answers the approved learning objective: Calculate gravitational field strength around spherical masses. The other options are weaker because they switch to the wrong fields concept, ignore the measured quantity, lose direction or sign information, or use a generic statement instead of A-Level Physics reasoning.
Common mistake
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