When discharging the 20.0 mF capacitor, you measure a voltage of 11.2 V across t

Question

When discharging the 20.0 mF capacitor, you measure a voltage of 11.2 V across the capacitor. What is the voltage drop across the 300.0 ft resistor? When discharging the 20.0 mF capacitor, you measure a voltage of 11.2 V across the capacitor. What is the current through the 300.0 ft resistor, in amps? Answer as a positive number. The current will be A. If you plot voltage drop across a capacitor vs time for a capacitor discharging through a resistor, what kind of plot would you get? Line Exponential decay Vertical parabola Horizontal parabola None of these

Explanation / Answer

7.

Vr - Vc = 0

Vr = Vc = 11.2 V

8.
I = Vr / R = 11.2 / 300 =0.037 A

9. Vc = V [ e^(-t/RC) ]

so this is Exponential decay.

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