Can someone help with this question: A 100F capacitor is connected in a series w

Question

Can someone help with this question: A 100F capacitor is connected in a series with a10 resistor and a 4.5 V battery that can be turned off andon. The capacitor starts off fully discharged:
E) If the battery is switched off after the capacitor is fullycharged and the capacitor is then discharged through the circuit,how long will it take for the voltage across the 10 resistordrop to 1 V? Can someone help with this question: A 100F capacitor is connected in a series with a10 resistor and a 4.5 V battery that can be turned off andon. The capacitor starts off fully discharged:

Explanation / Answer

Q/C = V Q(original)=C*V Q(final) = Q(original)*e^(-t/) sub V/C in for Q final and solve for t

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