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Mendeleev · Physics

Capacitance, charge and voltage

Capacitance tells how much electric charge a capacitor stores per volt across its terminals.

Formula usedC = Q/V
Visual cue · field / circuit
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Capacitance, charge and voltage

What do the symbols mean?

Ccapacitance
Qelectric charge
Vvoltage

Two worked examples

Example 1

A 100 µF capacitor charged to 12 V stores 1.2 mC.

Example 2

If 2 mC produces 10 V, the capacitance is 200 µF.

Good to knowIn French circuit notation, voltage is commonly written U; English-language texts commonly use V.

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