Exam-style question
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What is the capacitance of a capacitor that stores 12 coulombs of charge at a potential difference of 4 volts?.
- A.3 F
- B.48 F
- C.0.33 F
- D.12 F
Model answer
What a good answer should say
- 3 F
Explanation
Why this works
To find capacitance, we use the formula Q = CV. Rearranging gives C = Q / V.
Substituting the values, C = 12 C / 4 V = 3 F. Thus, the capacitance is 3 farads.
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