Report Sheet Lab 4 Circuits

.docx

School

Florida Agricultural and Mechanical University *

*We aren’t endorsed by this school

Course

2054

Subject

Electrical Engineering

Date

Apr 3, 2024

Type

docx

Pages

4

Uploaded by ospinavmario on coursehero.com

Report Sheet CIRCUITS (LAB 4) (Part 1-OHMS’S LAW) Plot a graph of Table 2. Construct your plot on a computer program such as Microsoft Excel®. If you do not have a graphing program installed on your computer, you can access one on the internet via the following links: http://nces.ed.gov/nceskids/createagraph/ http://www.onlinecharttool.com/graph?selected_graph=bar . TABLE 2: Voltage Readings of Different Battery Combinations Battery Combination Voltage Current 1 1.58 0.00 1 and 2 3.18 0.02 1, 2 and 3 4.76 0.04 1, 2, 3 and 4 6.34 0.05 What is the relationship between voltage and current? Use data from your graph to support your answer. Voltage and current have a direct relationship according to Ohm's Law: as voltage increases, current increases proportionally, as shown in the graph. Determine the slope of the line and record it in Table 3. TABLE 3:Resistor Data Resistance ( ) Slope (V/I) Percent Difference 970 ohms 987ohms 2.9% How does the value of the slope compare to the resistance you measured? Calculate the percent difference. The values are very similar. Use the results of your experiment to verify Ohm's Law. Is observed that the value of the slope is equal to the resistance so ohms law can be verified. How does adding more batteries affect the power dissipated through the resistor? Support your answer mathematically and record your answer in variable form.
As the applied voltage is increased by adding more batteries, the power dissipated increases more rapidly. (Parts 2 and 3 HOW AREA AND LENGTH AFFECT RESISTANCE) 1. Calculate the area for each diameter tested. Record area values in Table 7. 2. Find the resistance in each case of the Play-Doh® using Ohm’s Law, and finish completing Tables 5 and 7. TABLE 5: Length and Resistance Circuit Data Length (m) Current (A) Resistance ( ) 0.18 6.5 470.6 0.16 6.8 473.4 0.14 7.1 452.2 0.12 8.7 370.3 0.10 10 320.4 0.08 11.6 278.5 0.06 14.8 218.5 TABLE 7: Resistance and Area Circuit Data Diameter (m) Area (m 2 ) Current (A) Resistance ( ) 0.106 8.82 7.00 1004.2 0.106 8.82 7.72 906.85 0.106 8.82 8.60 814.15 0.106 8.82 9.45 741.00 0.106 8.82 10.22 685.80 0.106 8.82 11.10 631.50 0.106 8.82 12.00 582.72 3. Create plots of Resistance vs. Length and Resistance vs. Area. Construct your plot on a computer program such as Microsoft Excel®. If you do not have a graphing program installed on your computer, you can access one on the internet via the following links:
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help