Exam-style question
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Calculate the period of a satellite orbiting the Earth at a height of 2000 km. (Radius of the Earth = 6400 km, g = 9.81 N/kg) Scenario focus: transformers in a distinct A-Level Physics fields context; identify the field quantity, source, direction, and unit before selecting the answer.
Model answer
What a good answer should say
- The period of the satellite is approximately 5.84 hours.
Explanation
Why this works
The correct answer is The period of the satellite is approximately 5.84 hours.. This is correct for Gravitational fields because the stem is testing transformers; the chosen option keeps the field quantity, source interaction, direction, and unit consistent.
The alternatives are weaker because they mix gravitational, electric, magnetic, orbital, or transformer ideas, or they attach the right number to the wrong physical meaning.
Common mistake
No common mistake is linked to this question yet.