Lab 1

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School

University Of Georgia *

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Course

2170

Subject

Electrical Engineering

Date

Dec 6, 2023

Type

pdf

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Uploaded by CorporalResolveCat61

Objective: The objective of this lab is to learn and to gain an understanding of the Ohms Law and the relationship between voltage, current, and resistance. We were also tasked to learn how to make simple circuits both in series and in parallel using tools such as voltmeter and ammeter. Exercise 1 Figure 3. Figure 5.

Exercise 2: Series Circuit Figure 6a. Figure 6b. Part C: This is consistent with the definition of a series circuit because the current across the circuit is constant between all elements. Part D: There are five nodes and five branches.

Parallel Circuit Figure 7a Figure 7b Part C: They do follow the definition of parallel circuits because the voltage is the same across each of the legs when you add the voltages up for the first leg which is in series. Part D: There are five branches and five nodes

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The reason for why there is a difference in the measured and simulation is that there are tolerances on the elements that can give differences in the actual resistance of each part. Also, the voltage sources can possibly be not calibrated to the exact value for the calculated voltage. Discussion: In the experiment that we performed we used a simulation to create three varying simple circuits to help prove the idea of Ohm’s Law, as well as help differentiate between series and parallel circuits. What we did first was create a circuit for each exercise from a given figure, then we added both a voltmeter and an ammeter to help determine the current and voltage of each element (or branch). For exercise 1, We created a simple circuit and places a voltmeter in parallel with the resistor because a voltmeter is always placed in parallel to the resistor, and it gave us a reading of 5 volts. Then we proceeded to add an ammeter into the series and had to make sure it was in series with the resistor because ammeters are always added in series, from the ammeter we got a reading of 0.893 amps. These readings matched along with my calculations from using Ohms Law to determine current. In exercise 2, We started off by recreating figure 6 from the lab handout which was a series circuit with 4 resistors in series. The circuit contained 2 1kOhm resistors and 2 10k Ohm resistors. We then added a voltmeter to every single resistor in parallel from which we got multiple different voltages. Two of resistors that were 10k Ohms gave a reading of 4.545 V whereas the resistors with 1k Ohms gave a reading of 0.455 V. When we set up the circuit with ammeters in series with all the resistors, we noticed that every single ammeter gave us the same reading of 0.454 amps. Next, we created the circuit from figure 7, which was a parallel circuit with four resistors. We then proceeded to add voltmeters in parallel to the resistors and noticed that each leg of the circuit that was parallel had the same volts. For leg one the voltage read, 9.09 volts, and the other leg read 10 volts. The interesting thing to notice was that one leg had 2 resistors in series so the total for the leg was equal to 10 volts together but was split between the two resistors. These observations then help further prove Ohms law because the current was constant through that leg but it had different voltages for each resistor since they were in series but the leg overall was in parallel with rest of the circuit so its overall voltage was still 10 V.