RC Circuit Capacitor Charging
A series RC circuit is composed of a 2.0 μF capacitor, a 3.0 MΩ resistor, and a 12 V battery. The capacitor is initially uncharged. Approximately how many time constants, τ, must elapse for the capacitor voltage to reach 11.9 V?
A
5τ
B
−ln(0.01)τ
C
ln(0.99)τ
D
3τ
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