ELECTRICAL / CALCULATOR
Capacitor Energy
Calculate energy stored in an ideal capacitor from capacitance and terminal voltage.
Input Parameters
Edit the example values. Results update as you type.
Results
- Capacitor Energy
- 0.5414J
Formula
E = ½ × C × U²Substitution
E = 0.5 × 0.00047 × 48² = 0.5414 JCalculation Steps
- Convert capacitance to F and use the terminal-voltage magnitude.
- Multiply squared voltage by capacitance, then divide by 2.
Result Explanation
Calculates electrostatic energy in an ideal capacitor. Actual discharge power depends on circuit impedance.
Formulas and FAQ
E = ½ × C × U²What happens to energy when voltage doubles?
At constant capacitance, doubling voltage quadruples stored energy.