OnlineNursingOwl
← All nursing posts

Physics · Studypool

Harvard University Calculation for Equivalent Resistance of The Circuit Lab Report

Overview

POST

For finding R value from color code, use "Resistor color code calculator". For combining series and parallel R's, use "Parallel and series calculator", so on and so forth.If you had difficulty to note the color codes of the resistors, below is the description of what we had.A) For 3 R's in parallel, from top to bottom (in the circuit):Orange Orange Orange SilverBlue Grey Brown GoldBrown Grey Brown GoldB) For the mixed combination of R's:(Orange Orange Orange Silver, Orange Orange Orange Silver, Blue Grey Brown Gold) ----> these three are in parallel with the (Brown Grey Brown Gold) in series.Finally, to calculate the % error, use this equation below:100% *(difference between Expected and Measured )/ExpectedTo find the difference = subtract the smaller number from the larger number.

https://www.youtube.com/watch?v=0kl9WblCO_0

In this lab, you will watch the videos provided below, and collect data for several Ohmic conductors.Include the data and plots in your report. You should have as many data points in your plot as possible. If you are unsure how many, try to have at least 6.Remember to show ONLY data points when plotting the data. Then add a TREND LINE to the data. Add equation and R^2 value, as always. These things should be visible in your plots.Use the plots and data to find answers to the questions at the end of the lab manual. For some help to calculate the theoretical value (calculated) of equivalent resistance, I have added some instructions below.Bread board circuit making Part 1 (Links to an external site.)Circuit making Part 2 (Links to an external site.)Three resistors in parallel data (Links to an external site.)Series and Parallel Mixed Data (Links to an external site.)If you are unsure how to find equivalent resistance from series and parallel combination of resistors, here are some resources to use.There are several ways of calculating equivalent resistance from a combination (series, parallel, and mixed). You can choose any one of the two selected methods in this lab, as described below.1) Using the resistor combining rules. This is how you will eventually find equivalent resistance in your lectures. Some of you already know this method, but if you have not done it before, use method number 2. I will teach you in the lecture how to work with method 1 anyway.2) Use a web tool such as the calculator below. You can use this resource for many things.https://www.digikey.com/en/resources/online-conversion-calculators(Links to an external site.)For finding R value from color code, use "Resistor color code calculator". For combining series and parallel R's, use "Parallel and series calculator", so on and so forth.If you had difficulty to note the color codes of the resistors, below is the description of what we had.A) For 3 R's in parallel, from top to bottom (in the circuit):Orange Orange Orange SilverBlue Grey Brown GoldBrown Grey Brown GoldB) For the mixed combination of R's:(Orange Orange Orange Silver, Orange Orange Orange Silver, Blue Grey Brown Gold) ----> these three are in parallel with the (Brown Grey Brown Gold) in series.Finally, to calculate the % error, use this equation below:100% *(difference between Expected and Measured )/ExpectedTo find the difference = subtract the smaller number from the larger number.