// multi-utility computation suite · offline · instant · precise
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sci.capacitor-energy Calculator
Calculates energy stored in a capacitor E = ½CV² and charge Q = CV from capacitance and voltage. A 1 µF capacitor charged to 100 V stores 5 mJ — capacitors release this energy almost instantaneously, unlike batteries, making them useful for high-power pulse applications.
Inputs
Capacitance Uf
Ability to store electric charge (F). Capacitors charge quickly and release energy fast. Common values: pF to μF.
Voltage
Electric potential difference (V). Drives current through a circuit. Household: 120 V (US) or 230 V (EU/UK).
Charge Time Rc
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Results
energy stored (J)
Sample size or count used in the calculation.
charge stored (C)
Reference formula or conversion factor shown for context.
voltage at 1 RC (63.2%)
Electric potential difference between the two terminals (V). In AC systems, quoted as RMS — 230 V mains has a peak of ~325 V.
full charge (~5 RC)
Reference formula or conversion factor shown for context.
E = ½CV²
Reference formula or conversion factor shown for context.
Q = CV
Reference formula or conversion factor shown for context.