Question #349199

You have a RC circuit which contains a capacitor of 0.02 F and a resistor of 350 Ohm. Calculate how

long it would take (in seconds) for the capacitor to be charged to 89% of its full voltage.

Expert's answer

"1-e^{-t\/RC}=0.89"

"e^{-t\/RC}=0.11"

"t=-RC\\ln 0.11\\\\\n=-350*0.02*\\ln 0.11=15\\:\\rm s"

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