ECE 2300 – CIRCUIT ANALYSIS
HOMEWORK #3 – Spring 2006
Due Date: February 14, 2006
Complete problems from Electric Circuits, 7
th
Edition, by Nilsson and Riedel:
3.8, 3.9, 3.13, 3.15, 3.24, 3.26, 3.30, 3.43, 3.46, D6, D7, and D8
Notes:
In problem 3.13, in part (c), solve for the minimum values of
R
1
and
R
2
that will meet the
specification given.
Additional Problems:
D6.
a) Find the power delivered by the source in this circuit.
b) Find the voltage
v
X
.
+

v
S
=
9[V]
R
1
=
1[k
Ω
]
R
2
=
2.7[k
Ω
]
R
3
=
1.5[k
Ω
]
R
5
=
3.3[k
Ω
]
R
4
=
5.6[k
Ω
]
R
6
=
2.2[k
Ω
]
+

v
X
(PWA Problem 1 in Module 2)
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D7.
A voltmeter is used in series with a resistor to obtain a new voltmeter with the ability to
read a higher voltage.
The combination is given in the circuit here.
The original voltmeter has a
meter resistance of 10[k
Ω
], and reads up to 2[V] fullscale.
a)
The goal is to have a new voltmeter that can read up to 50[V].
What value of resistor
R
V
should be used to make this happen?
b)
When 18[V] is applied to this series combination, with
R
V
as found in part a), what will the
original voltmeter read on the 2[V] scale?
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 Spring '08
 Staff
 Resistor, Electrical resistance, Ohmmeter

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