1. DC Circuit Analysis Experiment - 4
Objective: a)Build the circuit shown on page 2, and using the steps outlined, measure the battery voltages, the voltage across each resistor and the current thru each resistor and its direction.
b) Calculate the voltage across each resistor and the current and direction thru each resistor using Kirchhoff’s laws.
Fill in the values found in a) on the data sheet under “Measured values” and the values from b) under “calculated values”

2. DC Circuit Analysis Experiment - 4 Circuit Diagram R1 = 100Ω R2=200Ω
V1=6v
R3=300Ω
V2=3v

3. DC Circuit Analysis Experiment - 4 Breadboard Layout R1 = 100Ω R2=200Ω
V1=6v
R3=300Ω
V2=3v
R Ω
R Ω
R Ω

4. Layout and measurement instructions
DC Circuit Analysis
Experiment - 4
Layout and measurement instructions
V1=6v
V2=3v
R1 = 100Ω
R3=300Ω
R2=200Ω
Insert resistor R1 (100 ohms – Brown, Black, Brown) from d4 to Red Bus
Insert resistor R2 (200 ohms – Red, Black, Brown) from d14 to Red Bus
Insert resistor R3 (300 ohms blue resistor) from d9 to Red Bus
Connect Red clip lead from battery +6v terminal to R1 at d4
Connect Black clip lead from battery – terminal to R2 at d14
Connect 3rd clip lead from battery 3v terminal to R3 at d9
Set DMM to 20vdc range
Measure voltages across resistors R1, R2, and R3 and enter on “measured values” data sheet . (Red lead to d4, Red Bus, Red Bus)
Switch DMM to the 20madc (current) range.
Disconnect Red lead from R1 at d4.
Connect the DMM Neg (Black) lead to R1 at d4
Connect the DMM Pos (Red) lead to the battery +6v terminal.
13. Read the current I1 and record on “ measured values” data sheet.
14. Disconnect the DMM leads and re-connect R1 per step 4
15. Disconnect the clip lead from R3 at d9
16. Connect the DMM Pos(Red) lead to R3 at d9
17. Connect the DMM Neg(Black) lead to the +3v battery terminal
18. Read the current I3 and record on data sheet.

5. Layout and measurement instructions
DC Circuit Analysis
Experiment - 4
Layout and measurement instructions
V1=6v
V2=3v
R1 = 100Ω
R3=300Ω
R2=200Ω
19. Remove DMM leads and re-connect R3 per step 6
20. Disconnect R2 from the Red Bus
21. Connect DMM Pos(Red) lead to R1 at Red Bus
22. Connect DMM Neg(Black) lead to R2 removed lead
23. Read current I2 and record on data sheet.
Disconnect DMM leads and re-connect R2 lead per step 2
24. This completes the measured values. Be sure and include the polarity of all measured values on the data sheet.
25. Use the second data sheet to compute using Kirchhoffs laws the currents and voltages for each resistor. Fill in on data sheet 2

6. Data Sheet 1 – Measured Values
DC Circuit Analysis
Experiment - 4
Data Sheet 1 – Measured Values
VR1 = _____V
VR2 = _____V
R1 = 100Ω
R2=200Ω + + A A
I1 = _____ma
I2 = _____ma +
V1=6v
VR3 = _____V
R3=300Ω
I3 = _____ma + A +
V2=3v
Note: Draw your voltage loop arrows and current direction arrows on this sheet. A
= Ammeter locations (Three measurements)

7. Data Sheet 2 – Computed Values
DC Circuit Analysis
Experiment - 4
Data Sheet 2 – Computed Values
Compute the currents and voltages for each resistor. Enter here:
VR1 = ________ v
VR2 = ________ v
VR3 = ________ v
IR1 = ________ ma
IR2 = ________ ma
IR3 = ________ ma