RC Circuits: A 2.0-?F capacitor is charged to 12 V and then discharged through a 4.0-M? resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

A. 8.0 s
B. 11 s
C. 22 s
D. 24 s


Answer: B

Physics & Space Science

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