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What is the time constant?

What is the time constant?

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The figure below shows how a bleeder resistor (R-250 kn) is used to discharge a capacitor (C-75.0 uF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock. Electronic circuit (a) What is the time constant? 1875 (t) How long will it take to reduce the voltage on the capacitor to 0.400% of its full value once discharge begins? 500 XI (c) If the capaciter is charged to a voltage V, through a 125 D resistance, calculate the time it takes to rise to 0.865V (this is about two time constants)
Transcribed Image Text:The figure below shows how a bleeder resistor (R-250 kn) is used to discharge a capacitor (C-75.0 uF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock. Electronic circuit (a) What is the time constant? 1875 (t) How long will it take to reduce the voltage on the capacitor to 0.400% of its full value once discharge begins? 500 XI (c) If the capaciter is charged to a voltage V, through a 125 D resistance, calculate the time it takes to rise to 0.865V (this is about two time constants)
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