Exam-style question
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A resistor-capacitor (RC) circuit has a time constant of 5 seconds. If the capacitor is charged to a potential difference of 12 V, what is the charge stored in the capacitor? (Use Q = CV) Scenario focus: orbital motion 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 charge stored in the capacitor is 0.006 C.
Explanation
Why this works
The correct answer is The charge stored in the capacitor is 0.006 C.. This is correct for Capacitance because the stem is testing orbital motion; 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.