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What happens to the energy stored when oil is introduced between the plates of a capacitor?
- Stored energy is given by \( \frac{1}{2} CV^2 \)
- Stored energy is given by \( \frac{1}{2} Q \frac{Q}{C} \)
- Stored energy is expressed as \( \frac{1}{2} CV^2 \)
- Stored energy is expressed as \( \frac{1}{2} Q \frac{Q}{C} \)
Correct answer: Stored energy is given by \( \frac{1}{2} CV^2 \)
Solution
The energy stored in a capacitor is given by the formula \( U = \frac{1}{2} CV^2 \), where \( C \) is the capacitance and \( V \) is the voltage across the capacitor. The presence of oil increases the capacitance, but the formula remains the same.
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