In a series RC circuit composed of a resistance R, a capacitor, and an emf source, the energy stored in the capacitor decreases with time as the capacitor discharges. After how many time constants is this stored energy one-fifth its initial value? A) 0.55 B) 1.04 C) 0.80 D) 0.90 E) 0.35

In a series RC circuit composed of a resistance R, a capacitor, and an emf source, the energy stored in the capacitor decreases with time as the capacitor discharges. After how many time constants is this stored energy one-fifth its initial value? A) 0.55 B) 1.04 C) 0.80 D) 0.90 E) 0.35

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 68PE: A 500- resistor, an uncharged 1.50-F capacitor and a 6.16-V emf are connected in series, (a) What is...

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Question

In a series RC circuit composed of a resistance R, a capacitor, and an emf source, the energy stored in the capacitor
decreases with time as the capacitor discharges. After how many time constants is this stored energy one-fifth its initial
value?
A) 0.55 B) 1.04 C) 0.80 D) 0.90
E) 0.35

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