Report_Basic_Electricity

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University of Ontario Institute of Technology *

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1020

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Electrical Engineering

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Apr 3, 2024

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Physics for Biosciences Laboratory Faculty of Science, Ontario Tech University Report for Experiment PB-01: Basic Electricity Student name: CRN: 70219 Date: January 16 2024 Activity 1: Ohm’s Law Table 1.1 Resistors Colors Coded Resistance Measured Resistance Error, % Tolerance 1st 2nd 3rd 4th #1 R 1 brow n blac k red gold 1000 1000 0% ±5 #2 R 2 green blue brow n gold 560 558 0.36% ±5 #3 R 3 brow n blac k brow n gold 100 98 2% ±5 #4 R 4 orang e oran ge brow n gold 330 331 0.3% ±5 #5 R 5 Oran ge oran ge brow n gold 330 331 0.3% ±5 #6 R 6 Oran ge oran ge brow n gold 330 332 0.6% ±5 V = 1 V Table 1.2 Resistance, Ω Voltage, V Current, A Voltage/Resistance, A 1000 1V 0.00980 0.001 558 1V 0.00176 0.0018 331 1V 0.00296 0.003 332 1V 0.00295 0.003 V = 1.5 V Resistance, Ω Voltage, V Current, A Voltage/Resistance, A 1000 1.5V 0.00148 0.0015 558 1.5V 0.00264 0.0027 331 1.5V 0.00444 0.0045 332 1.5V 0.00443 0.0045 V = 2 V Report for Experiment PB-01: Basic Electricity Page 1 of 5

Physics for Biosciences Laboratory Faculty of Science, Ontario Tech University Resistance, Ω Voltage, V Current, A Voltage/Resistance, A 1000 2V 0.00199 0.002 558 2V 0.00355 0.0036 331 2V 0.00596 0.006 332 2V 0.00594 0.006 V = 2.5 V Resistance, Ω Voltage, V Current, A Voltage/Resistance, A 1000 2.5V 0.00248 0.0025 558 2.5V 0.00444 0.0045 331 2.5V 0.00745 0.0076 332 2.5V 0.00743 0.00755 V = 3 V Resistance, Ω Voltage, V Current, A Voltage/Resistance, A 1000 3V 0.00298 0.003 558 3V 0.00533 0.005 331 3V 0.00894 0.009 332 3V 0.00891 0.009 Paste your graphs here Report for Experiment PB-01: Basic Electricity Page 2 of 5

Physics for Biosciences Laboratory Faculty of Science, Ontario Tech University Report for Experiment PB-01: Basic Electricity Page 3 of 5

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Physics for Biosciences Laboratory Faculty of Science, Ontario Tech University Activity 2: Resistances in Circuits Series R 12 = _1559 Ω _ R 23 = _656 Ω _ R 123 = __1657 Ω _ Parallel R 12 = _358 Ω _ R 23 = _84.2 Ω _ R 123 = _ 81.9Ω _ Activity 3: Voltages in Circuits Series R 1 = 1000 V 1 = 1.8V R 2 = 558 V 2 = 1.792V R 3 = 331 V 3 = 1.796V R 12 = 1559 V 12 = 1.797V R 23 = 656 V 23 = 1.796V R 123 = 1657 V 123 = 1.797V Parallel R 1 = 1000 V 1 = 2V R 2 = 558 V 2 = 2V R 3 = 331 V 3 = 2V R 123 = 81.9 V 123 = 2V Activity 4: Currents in Circuits Series I 0 = 0.003 I 1 = 0.005 I 2 = 0.10 I 3 = 0.058 Report for Experiment PB-01: Basic Electricity Page 4 of 5

Physics for Biosciences Laboratory Faculty of Science, Ontario Tech University Parallel R 1 = 1000 I 1 = 0.00198 R 2 = 558 I 2 = 0.00355 R 3 = 331 I 3 = 0.01949 R 123 =81.9 I 0 = 0.02440 I 4 = 0.04942 Conclusion The purpose of the lab was to become familiar with the electric DC circuits as well as to construct a complete simple electric circuit, familiarize students with the three variables known as Ohm’s Law, and finally, to understand how the resistors can be connected in both series and parallel. To perform this experiment, we used the circuit experiment board, power supply, multimeter, and banana plug wires. We determined that in a parallel circuit, voltage remained constant whereas a series circuit allowed for a decrease in voltage as it passed through each resistor. This happened because all components share the same electrical nodes. The reason voltage decreases in a series circuit is because of the internal resistance. So as the voltage flows through, the current will decrease as it passes through each resistor each time. We also determined that the lower the resistance was the greater the current would be. This happened because it is easier to flow through a circuit when the force resisting is weakened. Report for Experiment PB-01: Basic Electricity Page 5 of 5