Exam-style question
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What is the formula for calculating the energy stored in a capacitor?.
- A.E = 0.5 x C x V^2
- B.E = C x V
- C.E = 0.5 x Q x V
- D.E = Q^2 / 2C
Model answer
What a good answer should say
- E = 0.5 x C x V^2
Explanation
Why this works
The energy stored in a capacitor is given by the formula E = 0.5 x C x V^2, where E is the energy, C is the capacitance, and V is the potential difference. This formula shows how energy is related to both the capacitance and the voltage across the capacitor.
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