Answered: Draw the Thevenin equivalent circuit as…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

In the circuit shown below, the switch has been open a long time and the
circuit is initially in steady-state. At t=0, the switch is closed. R1=0.2Ω, and
R2=0.4Ω. The batteries have EMFs E1=1V and E2=3V. The capacitor has
capacitance 10 μF. Hint: What is the voltage on the capacitor just before the switch
is closed? Note that there is a voltage drop over the open switch.
a) What is the voltage over the capacitor before the switch is closed?
b) Draw the Thevenin equivalent circuit as seen by the capacitor.
c) What is the time constant for charging the capacitor?
d) What is the voltage on the capacitor as a function of time?

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