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EE 350
PROBLEM SET 1
DUE: 5 SEP 2007
Reading assignment: Lathi Chapter 1 and Background, Sections B.2 and B.3, and the MATLAB primer
(available on the EE 350 web page).
Recitation sections will meet the week of August 27.
Problems 1 and 2 are a review of material covered in EE 210 and require you to obtain an ordinary diﬀerential
equation and initial conditions for a simple circuit.
Problem 1:
(25 points)
Consider the RC circuit in Figure 1. The independent voltage source has constant amplitude
V
s
and, prior
to the switch closing at time
t
= 0, the voltage
v
(
t
) across the capacitor
C
is zero.
+

+

C
R
V
s
t = 0
v(t)
i(t)
Figure 1:
1. (4 points) What is the voltage
v
(0
+
) across the capacitor just after the switch is closed ? Why ?
2. (4 points) Find the current
i
(0
+
) through the capacitor just after the switch is closed.
3. (4 points) Find the voltage
v
(
∞
) after the switch has been closed for a very long time.
4. (4 points) Find the current
i
(
∞
) after the switch has been closed for a very long time.
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 Fall '07
 SCHIANO,JEFFREYLDAS,ARNAB

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