CAPE Physics Unit 2 · 2018 · Paper 1 · Question Q9
The capacitor in the circuit above has capacitance, \text{C}. It is charged to a voltage, \text{V}, and then discharged through a resistor with resistance, \text{R}. The charge at any time, t, is given by
- (A)
Q = \frac{C}{V} e^{-\frac{t}{RC}} - (B)
Q = \frac{V}{C} e^{-\frac{t}{RC}} - (C)
Q = CV e^{-\frac{RC}{t}} - (D)
Q = CV e^{-\frac{t}{RC}}
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