(11%) Problem 6: The figure shows how a bleeder resistor is used to discharge a
ID: 1769764 • Letter: #
Question
(11%) Problem 6: The figure shows how a bleeder resistor is used to discharge a capacitor after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock. Electronic! C- circuit 180 F 250 k Otheexpertta.com 033% Part (a) what is the time constant of this circuit in seconds? begins? 33% Part(b) How long will it take in seconds to reduce the voltage on the capacitor to 0.250% 5% of 5% of its full value once discharge 33% Part (c) If the capacitor is charged to a voltage Vo through a 120 resistance, calculate the time in ms it takes to rise to 0865V0 Grade Summary t865- Deductions0% Potential 100%Explanation / Answer
(C) T = R C = 120 x 80 x 10^-6
T = 9.6 x 10^-3 s
V = V0 [1 - e^(-t/T)]
0.865 V0 = V0 [1 - e^(-t/9.6ms)]
t = 19.2 ms or 19.2 x 10^-3 s
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