At time t = 0, an RC circuit consists of a 20.0-V emf device, a 66.0-2 resistor, and a 140.0-µF capacitor that is fully charged. The switch is thrown so that the capacitor begins to discharge. (a) What is the time constant z of this circuit? (b) How much charge is stored by the capacitor at t = 0.57, 27, and 4r? q(t = 0.5t) = q(t = 2r) = q(t = 4r) =

At time t = 0, an RC circuit consists of a 20.0-V emf device, a 66.0-2 resistor, and a 140.0-µF capacitor that is fully charged. The switch is thrown so that the capacitor begins to discharge. (a) What is the time constant z of this circuit? (b) How much charge is stored by the capacitor at t = 0.57, 27, and 4r? q(t = 0.5t) = q(t = 2r) = q(t = 4r) =

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 72PQ: A capacitor with initial charge Q0 is connected across a resistor R at time t = 0. The separation...

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Question

At time t = 0, an RC circuit consists of a 20.0-V emf device, a 66.0-0 resistor, and a 140.0-uF capacitor that is fully charged. The switch is thrown so that the capacitor begins to discharge.
(a) What is the time constant z of this circuit?
(b) How much charge is stored by the capacitor at t = 0.5r, 2r, and 4r?
q(t = 0.5t) =
q(t = 21) =
q(t = 47) =

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