A 20-μF Capacitor Is Charged to 12 V and Then Discharged

question 160

Multiple Choice

A 2.0-μF capacitor is charged to 12 V and then discharged through a 4.0-MΩ 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

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