# What is the relationship between the slope of the plot line and the circuit resistance?

Learning Goal: I’m working on a electrical engineering report and need a sample draft to help me learn.ELET 3101K – Electric Circuit ISpring Semester 2022Given: 2/10/2022 – Due 3/3/2022Laboratory 1 – Ohm’s LawObjective This exercise examines Ohm’s law, one of the fundamental laws governing electrical circuits. It states that voltage is equal to the product of current times resistance.Theory Overview Ohm’s law is commonly written as V = R * I (remember from college algebray = m * x. That is, for a given current, an increase in resistance will result in a greater voltage. Alternately, for a given voltage, an increase in resistance will produce a decrease in current. As this is a first order linear equation, plotting voltage versus current for a fixed resistance will yield a straight line. The slope of this line is the resistance. Therefore, for a high resistance, the plot line will appear closer to the horizontal line while a lower resistance will produce a more vertical plot line.Equipment (make sure that the resistors are in kΩs)(1) Adjustable DC power supply model:_______________ srn:__________________(1) Digital multi-meter model:________________ srn:__________________(1) 1 kΩ resistor __________________(1) 6.8 kΩ resistor __________________(1) 33 kΩ resistor __________________SchematicFigure 1.1Procedure: Start doing the theoretical calculations first and fill the tables. Then build the circuit of Figure 1.1 using the 1 kΩ resistor. Set the DMM to measure DC current and insert it in-line between the source and resistor – necessary to watch the video at https://www.youtube.com/watch?v=P660hTqkGiY. Set the source for zero volts. Measure and record the current in Table 1.1. Note that the theoretical current is 0 and any measured value other than 0 would produce an undefined percent deviation.Setting E at 2 volts, determine the theoretical current based on Ohm’s law and record this in Table 1.1. Measure the actual current, determine the deviation also called the percent error, and record these in Table 1.1. Note that Deviation = 100 * (measured − theory) / theory.Repeat step 2 for the remaining source voltages in Table 1.1.Remove the 1 kΩ and replace it with the 6.8 kΩ. Repeat steps 1 through 3 using Table 1.2.Remove the 6.8 kΩ and replace it with the 33 kΩ. Repeat steps 1 through 3 using Table 1.3.Using the measured currents from Tables 1.1, 1.2, and 1.3, create a plot of current versus voltage. Plot all three curves on the same graph. Voltage is the vertical axis and current is the horizontal axis.Data TablesE (volts)I theoryI measuredDeviation0024681012Table 1.1 (1 kΩ)E (volts)I theoryI measuredDeviation0024681012Table 1.2 (6.8 kΩ)E (volts)I theoryI measuredDeviation0024681012Table 1.3 (33 kΩ)Questions:Does Ohm’s law appear to hold in this exercise?Is there a linear relationship between current and voltage?What is the relationship between the slope of the plot line and the circuit resistance?Writing Part: Form a group of three students. Each group should write a small introduction, include the experimental (schematics) and theoretical solutions in the main body of the report and write a conclusion of more than two sentences (answering the questions are good conclusion remarks). The report should be written in double space, maximum four-five pages preferably using the 12 – size Times New Roman font
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