Answered: 1.5-uF capacitor in a television set is…

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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A 1.5-uF capacitor in a television set is charged by a 22,000-V potential difference. To prevent
harm to the television repair technician, a large “bleeder” resistor is connected across the
capacitor’s ends. When the television set is turned off, the capacitor discharges through the bleeder
resistor rather than through the technician, who might accidentally touch its ends. (a) Calculate the
time needed to discharge 95 percent of the charge on the capacitor through a 1.0 MΩ resistor. (b)
What is the total charge that must be discharged? Used the formula q=qf e -t/RC

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