Chapter 6: Series- Parallel Circuits
Practice Problems
3. Calculate the component voltages and branch currents for the circuit shown in Figure 6.40,
along with the values of IT and RT.
IT = 4.6 mA
RT =5.65 k
5. Calculate the component currents and loop vo

Chapter 5: Parallel Circuits
Practice Problems
1. The table below refers to Figure 5.27. For each combination of branch currents, find the total
circuit current.
I1
I2
I3
IT
a.
12 mA
2.8 mA
6.6 mA
_21.4 mA_
b.
5.5 mA
360 A
1.04 mA
_360.00564 A_
c.
43 mA
2

ECT 122 Week 7 iLab #3 MBaucom
1. Define the following.
Peak value: This is the value measured from the vertical middle or center of the
waveform to one maximum. Measured in volts (Vp)
Peak-to-Peak value: This is the value of the signal measured from the

1. Question :
Student Answer:
(TCO3)Forthecircuitbelow,whatwillXMM6readiftheswitchisopen?
XMM1ismeasuringcurrentandtheotherDMMsaremeasuringvoltage.
XMM6 will not read any current because in the open state it is an
incomplete circuit. However the voltage w

1. Question :
Student Answer:
(TCO3)Forthecircuitbelow,whatwillXMM6readiftheswitchisopen?
XMM1ismeasuringcurrentandtheotherDMMsaremeasuringvoltage.
XMM6 will not read any current because in the open state it is an
incomplete circuit. However the voltage w

ECT 122 Week 7 iLab #2
1. Define Alternating Current?
Alternating current is an electric current that reverses direction in a circuit at regular
intervals.
2. Draw an X-Y axis display where each X division is 1 ms/div and each Y division is 1
V.
3. Add a

Carson Bell
ECT 122 Week 7 iLab #3
1. Define the following.
Peak value: The maximum value reached by either alternation of a waveform.
Peak-to-Peak value: The difference between the peak values of a waveform.
2. A signal has a peak value of 2 V. What is t

Carson Bell
ECT 122 Week 7 iLab #2
1. Define Alternating Current? Alternating Current (AC) is used to describe any current
that periodically changes direction.
2. Draw an X-Y axis display where each X division is 1 ms/div and each Y division is 1
V.
3. Ad

ECT 122 Week 7 iLab #1
1. What is Thevenins theorem? What purpose does it serve?
Thvenin's theorem, Any linear electrical network with voltage and current sources
and only resistors can be replaced by just A and B by an equivalent voltage source Vth in
se

Chapter 9: Alternating Current and AC Measurements
Practice Problems
1. Calculate the period of the waveform shown in Figure 9.44.
t = 80 ms
2. Calculate the period of the waveform shown in Figure 9.45.
t = 500 s
3. Calculate the period of the waveform sh

Chapter 7: Circuit Analysis Techniques
Practice Problems
15. Derive the Thevenin equivalent of the circuit shown in Figure 7.47a.
RTH = 2.2 k
VTH = 4.1 V
16. Derive the Thevenin equivalent of the circuit shown in Figure 7.47b.
RTH = 88.71
VTH = 8.23 V
17

ECT 122 Week 7 iLab #3
1. Define the following.
Peak value: This is the value measured from the vertical middle or center of the
waveform to one maximum. Measured in volts (Vp)
Peak-to-Peak value: This is the value of the signal measured from the top maxi

ECT 122 Week 7 iLab #2
Alternating Current
1. Define Alternating Current?
Alternating current is an electric current that reverses direction in a circuit at regular
intervals.
2. Draw an X-Y axis display where each X division is 1 ms/div and each Y divisi

ECT 122 Week 7 iLab #1
Thevenins Theorem
1. What is Thevenins theorem? What purpose does it serve?
Thevenin's theorem, Any linear electrical network with voltage and current sources and
only resistors can be replaced by just A and B by an equivalent volta

Chapter 6: Series-Parallel Circuits
Practice Problems
18. Determine the value of load power (PL) for the circuit shown in Figure 6.48b.
PL = 60 mW
20. Determine the values of VL and VNL for the circuit shown in Figure 6.49b.
VL = 2.65 V
VNL = 3 V
38. Dete

Chapter 5: Parallel Circuits
Practice Problems
15. Determine the potentiometer setting required to set the total circuit current in Figure 5.32a to
50 mA.
With a 1.5 k potentiometer, the percentage should be set at 80%
38. Figure 5.43 shows a potentiomete

ECT122 Week 6 iLab #1
1. Define troubleshooting.
Troubleshooting is a form of problem solving, often applied to repair failed products or
processes. It is a logical, systematic search for the source of a problem so that it can be
solved, and so the produc

ECT 122 Week 5 iLab #3
1. Determine the load voltage by deriving an equivalent circuit for the circuit below.
Reduce the R1, R2, and R3 combination to a single equivalent resistance. Also,
reduce R4 and RL1 to a single resistance.
RA-B:_20 mA_
RC:_11 mA_

ECT 122 Week 5 iLab #1
Parts:
Breadboard
DC Power Supply
Hand Held DMM
Test leads
Wire
100 resistor, 120 resistor, 220 resistor, 330 resistor
1. Identify each of these circuits.
a) Series circuit connected in parallel
b) Parallel circuit connected in seri

Chapter 4: Series Circuits
Practice Problems
11. Determine the potentiometer setting needed to set the current in Figure 4.33a to 18 mA.
R2 = 86
12. Determine the potentiometer setting needed to set the current in Figure 4.33b to 27 mA.
R2 = 350

ECT 122 Week 4 iLab #3
Parts:
Breadboard
DC Power Supply
Handheld DMM
Test leads
Wire
1.2k resistor
3.3k resistor
4.7k resistor
1. Calculate the current in each branch of the parallel circuit below.
IT1=_10.8 mA_
IR1=_1.7 mA_
IR2=_2.4 mA_
IR3=_6.7 mA_
2.

ECT 122 Week 4 iLab #2
Parts:
Breadboard
DC Power Supply
Hand Held DMM
Test leads
Wire
220 resistor
560 resistor
1.0k resistor
1. State Kirchhoffs Current Law.
The sum of currents going towards a node is equal to the sum of currents leaving the
node.
2. W

ECT 122 Week 4 iLab #1
Parts:
Breadboard
DC power supply
Handheld DMM
Test leads
Wire
2.2k resistor
3.3k resistor
1. What is the relationship between conductance and resistance?
Conductance is the inverse (1/r) of resistance.
2. What is the symbol for mho

Chapter 4: Series Circuit
Practice Problems
1. Each of the following resistor combinations is connected as shown in Figure 4.29. For each
combination, calculate the total circuit resistance.
R1
R2
R3
R4
a. 1 k
220
330
1.1 k = 2.65 k
b. 10
18
47
200 = 2

ECT 122 Week 3 iLab #3
Parts:
Breadboard
DC power supply
Handheld DMM
Test leads
Wire
1.0k resistor
1.2k resistor
3.3k resistor
10k potentiometer
1. Using the circuit below, calculate the anticipated voltage drops across each resistor
and record them belo

ECT 122 Week 3 iLab #2
Parts:
Breadboard
DC power supply
Handheld DMM
Test leads
Wire
2 - 1.0k resistor
2.2k resistor
3.3k resistor
1. Using the circuit below, calculate the following values. On the circuit drawing,
indicate the polarities for each voltag

ECT 122 Week 3 iLab #1
Parts:
Breadboard
DC Power Supply
Hand Held DMM
Test leads
Wire
1.0k resistor
2.2k resistor
3.3k resistor
1. Identify the type of the following circuits as either serial or parallel.
Series Circuit
Parallel Circuit
2. List four char

Chapter 3: Ohms Law and Power
Practice problems
13. Calculate the minimum acceptable power rating for the resistor in Figure 3.25a.
a. 6^2 / 120 = 300 mW
14. Calculate the minimum acceptable power rating for the resistor in Figure 3.25b
b. 8^2 / 16 = 4 W