Energy Stored in Capacitor

📊 intermediate

$$U = \frac{1}{2}CV^2 = \frac{1}{2}QV$$

Potential energy stored in the electric field of a capacitor.

Variables & Units

$U$

Stored Energy

Unit: Joule

Key Information

📐 Derived From

Integration of work $dW = V dQ$.

💡 Example

Energy in a defibrillator capacitor.

🔧 Applications

Power backup systems.

⚠️ Constraints

Assumes ideal capacitor.

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