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ECT 122 Week 1 iLab 2
ECT 122 Week 1 iLab #2
Part 1
1.Calculate the conductance of the following resistors:
Note: don’t forget the units!
2.Calculate the resistance of a circuit that has the following conductance of
3.Describe a Conductor.
4. Give two examples of Insulators.
5.What is a Semiconductor and give an example?
Part 2
1.Using the Internet, search for a schematic symbol for a dc battery and paste it below or
draw the symbol for a battery and label its terminals.
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ECT 122 Week 2 iLab 1 Ohms Law
ECT 122 ECT\122 ECT 122 Week 2 iLab 1 Ohms Law
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ECT 122 Week 2 iLab 2
ECT 122 ECT\122 ECT 122 Week 2 iLab 2
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ECT 122 Week 2 iLab 3
ECT 122 Week 2 iLab #3
Part 1
Parts:
Breadboard
DC Power Supply
Hand Held DMM
Test leads
Wire
56kΩ resistor
Given the circuit below, use Ohm’s law to determine the total current in the circuit and
the voltage across the resistor.
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ECT 122 Week 3 iLab 1
1.Identify the type of the following circuits as either serial or parallel.
2.List four characteristics of a series circuit.
3.Calculate the total resistance in the circuit below. Show the formula used.
4.Download the Multisim file “Series1” from Doc Sharing, Week 3. Run the simulation
and verify the simulated results are the same as the calculated values. Were the values the
same? Yes/No. If No, why?
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ECT 122 Week 3 iLab 2
1.Using the circuit below, calculate the following values. On the circuit drawing, indicate
the polarities for each voltage and show the current direction.
2.Download the Multisim file “Series2” from Doc Sharing, Week 3. Simulate the circuit.
Use an XMM to measure the following values.
3.Use the breadboard to construct the circuit above. Measure and record the value of
eachresistor with the handheld DMM. Remember that you should remove the resistor
from the circuit to obtain an accurate reading. Connect the input of the circuit to the
variable positive supply connections on the power supply. Set the DC power supply to
+10 volts.
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ECT 122 Week 3 iLab 3
Using the circuit below, calculate the anticipated voltage drops across each resistor and
record them below.
2.Download the Multisim file “VD1” from Doc Sharing, Week 3. Run the simulation
and record the voltmeter readings.
3.Download the Multisim file “Series3” from Doc Sharing, Week 3. Connect the
potentiometer as a variable resistor and set its initial value to 2.2 kW. Remember to set
the potentiometer before placing it in the circuit. Calculate the total current. Simulate
the circuit and record the values below.
4.Use the breadboard to construct the circuit above.
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ECT 122 Week 4 Homework Practice Problems
1. Determine the potentiometer setting needed to set the current in Figure 4.33a to 18
mA.
12. Determine the potentiometer setting needed to set the current in Figure 4.33b to 27
mA.
1. The table below refers to Figure 5.27. For each combination of branch currents, find
the total circuit current.
3. Determine the values of the branch currents and the total current for the circuit
shown in Figure 5.28a. Vs/Rn = In 8/1000 = I1 = 8 mA 8/200 = I2 = 40 mA It =
48 mA
6. Determine the values of the branch currents and the total current for the circuit
shown in Figure 5.29b.
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ECT 122 Week 4 iLab 1
ECT 122 ECT/122 ECT 122 Week 4 iLab 1
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ECT 122 Week 4 iLab 2
1.State Kirchhoff ’s Current Law.
2.What is the equation for the total current in a parallel circuit?
3.Determine the total current in the following nodes.
4.Determine the total current in the following circuit.
5.If VS = 10 V in the circuit above, what are the following voltages?
6.Download the Multisim file “Parallel2” from Doc Sharing, Week 4. Calculate the
values below.
7.Prototype the circuit below on the breadboard. Connect the circuit’s input to the
variable +12 V supply. Turn on the DC power supply and use the handheld DMM to
set it to +10V.
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ECT 122 Week 4 iLab 3
1.Calculate the current in each branch of the parallel circuit below.
2.Download the Multisim file “Parallel1” from Doc Sharing, Week 4. Run the
simulation and verify the simulated results are the same as the calculated values. Were the
values the same? (YES/NO.) If no, why?
3.Calculate the total power dissipated in the circuit by using the total voltage and
current. Then calculate the power dissipated in each resistor and verify that the sum of
the power dissipated in each resistor equals the total power dissipated.
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ECT 122 Week 5 Homework Practice Problems
ECT 122 ECT/122 ECT 122 Week 5 Homework Practice Problems
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ECT 122 Week 5 iLab 2
1.Calculate the quantities listed.
2.Download the Multisim file “Ser_Par2” from Doc Sharing, Week 5. Run the
simulation and verify the simulated results are the same as the calculated values. Were the
values the same? Yes/No. If no, why?
3.Construct the circuit above on the breadboard. Connect the circuit’s input to the power
supply and set it to +10 V. Use the handheld DMM to adjust the supply to +10 V.
Using the handheld DMM, measure the values below. Remember, to measure current,
the DMM must be in series with the resistor. Have the professor verify the circuit before
applying power.
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ECT 122 Week 5 iLab 3
.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.
2.Download the Multisim file “Ser_Par3” from Doc Sharing, Week 5. Run the
simulation and verify the simulated load voltage matches the calculated value.
3.Modify the Multisim file to match the equivalent circuit you developed in problem #1
(Battery and two equivalent resistors). Run the simulation and compare the equivalent
circuit’s results with the original circuit’s results. Are the results the same (YES/NO)? If
no, determine why and correct it
4.Construct the original circuit above on the breadboard.
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ECT 122 Week 6 iLab 1
ECT 122 Week 6 iLab #1
1.Define troubleshooting.
2.What is an open circuit?
3.What is the primary symptom of an open circuit?
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ECT 122 Week 6 iLab 2
ECT 122 Week 6 iLab #2
1.Determine the range of output voltages for the circuit below. RLvaries from 47 Ω to
470 Ω.
2.Download the Multisim file “Ser_Par4” from Doc Sharing, Week 6. Run the
simulation and verify that the simulated load voltage matches the calculated value.
3. Construct the original circuit above on a breadboard. Connect the circuit’s input to a
variable positive supply. Connect the circuit’s input to the power supply and set it to +10
V. Use a DMM to adjust the supply to +10 V. Measure the load voltage with a DMM.
Have the professor verify the circuit before applying power.
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ECT 122 Week 6 Quiz
1. (TCO 3) For the circuit below, what will XMM6 read if the switch is open?
XMM1 is measuring current and the other DMMs are measuring voltage
2. (TCO 3) For the circuit below, calculate the resistance from A to B.
3. (TCO 4) For the circuit below, how much current is leaving the node connecting V1
and R1.
4. (TCO 5) Determine the current through R2 in the circuit below.
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ECT 122 Week 7 iLab 1
ECT 122 ECT\122 ECT 122 Week 7 iLab 1
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ECT 122 Week 7 iLab 2
ECT 122 ECT/122 ECT 122 Week 7 iLab 2
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ECT 122 Week 7 iLab 2
ECT 122 ECT\122 ECT 122 Week 7 iLab 2
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ECT 122 Week 7 iLab 3
ECT 122 ECT/122 ECT 122 Week 7 iLab 3
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ECT 122 Week 7 iLab 3
ECT 122 ECT\122 ECT 122 Week 7 iLab 3
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