APFIVE Estimating Initial Current in an RC Circuit
A capacitor discharges through a resistor, releasing $$3.6 \times 10^{-3}\ \mathrm{C}$$ of charge in $$0.12\ \mathrm{s}$$. The current at any moment is given by $$I(t) = I_0 e^{-t/RC}$$, but the time constant $$RC$$ is unknown. Estimate the initial current $$I_0$$ using the information provided.
A
3.0 × 10^-1 A
B
3.0 × 10^-2 A
C
4.3 × 10^-3 A
D
4.3 × 10^-4 A
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