Answered: Electronic circuit 250 k2 |80 μ Figure…

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter1: Measurement

Section: Chapter Questions

Problem 9MC

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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.
(a) What is the time constant? (b) How long will it take to reduce the voltage on the capacitor to 0.250% (5% of 5%) of its full value once discharge begins?
(c) If the capacitor is charged to a voltage V0 through a 100-Ω resistance,
calculate the time it takes to rise to 0.865V0 (This is about two time constants.)

Electronic
circuit
250 k2
|80 μ
Figure 21.55

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