Fundamentals of Electric Circuits
6th Edition
ISBN: 9780078028229
Author: Charles K Alexander, Matthew Sadiku
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 2, Problem 58P
The 150 W tight bulb in Fig. 2.122 is rated at 110 volts. Calculate the value of Vs to make the light bulb operate at its rated conditions.
Figure 2.122
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1. Using KVL and/or KCL, determine the unknown current and voltage for each resistor for the circuit
given in Figure 2.7. Verify that the total voltage is equal to the supply voltage.
V = 12V
R- 120n
R:- 4.7kn
R= 1.5kn
Figure 2.7
2. Using KVL and/or KCL, determine the unknown current and voltage for each resistor for the circuit
given in Figure 2.8.
V= 10V
R: = 3.3kn
R;= 22kn
R = 1.5kn
Figure 2.8
3. Using KVL and/or KCL, determine the unknown current and voltage for each resistor for the circuit
given in Figure 2.9 (2).
RI
V- 15V
R: = 1200
R: = 4.7kn
R = 1.5kn
R= 4.7kn
Figure 2.9
4. Determine the equivalent resistance seen from the voltage supply for the circuits given in Step 1,
Step 2 and Step 3.
Q2: Calculate the reading that would be observed on a moving-iron ammeter when it is
measuring the current in the circuit shown in Figure
Current
ot
27
2. Using KVL and/or KCL, determine the unknown current and voltage for each resistor for the circuit
given in Figure 2.8.
Vs= 10V
R: = 3.3kn
R; = 22kn
R = 1.5kn
Figure 2.8
Chapter 2 Solutions
Fundamentals of Electric Circuits
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