Description

Lab 5

    Series-Parallel Circuits

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Objective: To investigate the properties of series-parallel circuits

Components Required:  

3 x 1-kΩ resistor

1 x breadboard

Procedure:

⦁ Build a series-parallel circuit with Vs = 6.0 V and three 1-kΩ resistors where R1 is in series with R2 // R3

⦁ Connect the negative terminal of the supply to the Earth ground

⦁ Use the worksheet provided below to calculate the theoretical circuit voltages and currents

⦁ Measure the circuit parameters and calculate the percent errors

Schematic Diagram: 

Worksheet

Calculations based on nominal component values:

⦁ RT = _________ IT = _________

⦁ Vs = __________VR1 = _________ VR2 = _________VR3 = _________

⦁ V1 = __________ V2 = _________ V3 = _________VG = __________

⦁ Measurements:

⦁ R1 = _________ R2 = _________ R3 = _________ RT = _________ 

⦁ Vs = __________VR1 = _________ VR2 = _________VR3 = _________

⦁ V1 = __________ V2 = _________ V3 = _________VG = _________

⦁ IT = _________ (based on the measured VR1 and R1)

⦁ IR1 = _________ (based on the measured on VR1 & R1)

⦁ IR2 = _________ (based on the measured VR2 & R2)

⦁ IR3 = _________ (based on the measured VR3 & R3)

⦁ Was IT  or IR1 equal to IR2 + IR3 and why or why not?

Insert the diagram of your actual breadboard with all the connected components on it as well as a picture showing ALL your calculations here:

Conclusions

For each parameter, find the percent difference between the calculated and measured values:

Formula to use: 

Do ALL your calculations on the next page:

RT: ________% IT: ________%

Vs: ______% VR1: _____% VR2: _____% VR3: ____%

V1: ______% V2: _____% V3 : _____% VG: _____%

Which ones of the above figures were out of the ± 5% tolerance limits?

Scratchpad for Your Rough Work

Scratchpad for Your Rough Work

Instruction Files