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The capacitance of a capacitor is defined as
Athe product of the charge and the voltage on it
Bthe charge stored per unit potential difference
Cthe energy stored per unit charge on the plates
Dthe potential difference produced per unit charge
Answer & Solution
Correct answer: B. the charge stored per unit potential difference
1. For a capacitor the stored charge is proportional to the applied voltage, $Q \propto V$.
2. The constant of proportionality is the **capacitance**, $C = Q/V$.
3. Its SI unit is the farad (F = C V$^{-1}$).
_Source: Samacheer Kalvi Class 12 Physics Vol.1, Unit 1 'Electrostatics', Short Answer Q.20_
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