Figure 20.47 shows how a bleeder resistor (R = 250 k) is used to discharge a capacitor (C = 90.0 µF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock. Electronic circuit Figure 20.47 (a) What is the time constant? 22.5 S (b) How long will it take to reduce the voltage on the capacitor to 0.250% of its full value once discharge begins? (c) If the capacitor is charged to a voltage Vo through a 125 2 resistance, calculate the time it takes to rise to 0.865V (this is about two time constants).
Figure 20.47 shows how a bleeder resistor (R = 250 k) is used to discharge a capacitor (C = 90.0 µF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock. Electronic circuit Figure 20.47 (a) What is the time constant? 22.5 S (b) How long will it take to reduce the voltage on the capacitor to 0.250% of its full value once discharge begins? (c) If the capacitor is charged to a voltage Vo through a 125 2 resistance, calculate the time it takes to rise to 0.865V (this is about two time constants).
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter21: Circuits And Dc Instruments
Section: Chapter Questions
Problem 71PE: Figure 21.55 shows how a bleeder resistor is used to discharge a capacitor after an electronic...
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can you help with this q plz. thanks alot!
![Figure 20.47 shows how a bleeder resistor (R
=
Electronic
circuit
MM
R
250 kn) is used to discharge a capacitor (C = 90.0 µF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock.
Figure 20.47
(a) What is the time constant?
22.5
S
(b) How long will it take to reduce the voltage on the capacitor to 0.250% of its full value once discharge begins?
S
(c) If the capacitor is charged to a voltage Vo through a 125 resistance, calculate the time it takes to rise to 0.865V (this is about two time constants).
S](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F67fa15d9-2a79-42c5-93bc-884404783928%2Ffa69f159-4406-4e2f-9e8a-1ed352981f63%2Ficcqha9_processed.png&w=3840&q=75)
Transcribed Image Text:Figure 20.47 shows how a bleeder resistor (R
=
Electronic
circuit
MM
R
250 kn) is used to discharge a capacitor (C = 90.0 µF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock.
Figure 20.47
(a) What is the time constant?
22.5
S
(b) How long will it take to reduce the voltage on the capacitor to 0.250% of its full value once discharge begins?
S
(c) If the capacitor is charged to a voltage Vo through a 125 resistance, calculate the time it takes to rise to 0.865V (this is about two time constants).
S
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