3. How consistent were the voltages of your equipotential lines? Would you say the electric d between the positive and negative bars is constant? If so, what is the magnitude and direction of the field? If not, why not? 183-APHY-109-$0007-XLIST COURSE PRE-LAB QUESTIONS Before starting this prelab you should read the lab carefully. You are essentially doing the entire lab here using simulated voltage values, and if you understand this prelab and do it correctly the actual lab will run very smoothly when you do it. Use this example voltage data to complete this prelab: 4.47 4.55 4.55 4.37 4.15 4.34 4.30 4.44 4.68 4.81 4.72 |4.51 444 3.81 3.84 3.16 3.14 3.10 3.17 3.14 3.14 3.14 3.16 3.19 3.11 3.19 3.15 3.18 2.41 2.40 2.46 247 2.44 2.46 2.41 2.42 247 2.46 2.46 2.48 2.42 1.73 1.71 1.75 1.74 1.73 1.72 1.78 1.06 1.10 1.13 1.04 1.14 1.05 1.06 1.11 1.13 1.13 1.06 1.08 107 3.80 3.83 3.77 3.82 3.77 3 1.73 1.76 0.49 0.49 0.47 0.49 0.49 0.49 0.42 0.44 0.50 0.50 0.45 0.50 0.50 Follow these steps exactly to complete this prelab: a) Enter the data into an Excel spreadsheet arranged exactly as it is above. b) Calculate the average and standard deviation of each row c) Calculate the electric fields between each row, as well as the average value and uncertainty of the field, as described in sections 2.3.6 and 2.3.7. Assume the spacing between rows is 1 cm. d) Use Excel to create a surface plot, as described in part 3 of the lab. e) On one page, print your entire spreadsheet- including the surface plot- and hand-draw arrows showing the electric field direction over the surface plot. You will be handing in this printout as your prelab. (You are advised to take the time to make sure your spreadsheet is well formatted and correctly labeled before printing it out.) Your prelab must be printed and handed in, but you should keep a copy of the Excel files so you can use them again during the lab to speed up sections 2 and 3 3. How consistent were the voltages of your equipotential lines? Would you say the electric d between the positive and negative bars is constant? If so, what is the magnitude and direction of the field? If not, why not? 183-APHY-109-$0007-XLIST COURSE PRE-LAB QUESTIONS Before starting this prelab you should read the lab carefully. You are essentially doing the entire lab here using simulated voltage values, and if you understand this prelab and do it correctly the actual lab will run very smoothly when you do it. Use this example voltage data to complete this prelab: 4.47 4.55 4.55 4.37 4.15 4.34 4.30 4.44 4.68 4.81 4.72 |4.51 444 3.81 3.84 3.16 3.14 3.10 3.17 3.14 3.14 3.14 3.16 3.19 3.11 3.19 3.15 3.18 2.41 2.40 2.46 247 2.44 2.46 2.41 2.42 247 2.46 2.46 2.48 2.42 1.73 1.71 1.75 1.74 1.73 1.72 1.78 1.06 1.10 1.13 1.04 1.14 1.05 1.06 1.11 1.13 1.13 1.06 1.08 107 3.80 3.83 3.77 3.82 3.77 3 1.73 1.76 0.49 0.49 0.47 0.49 0.49 0.49 0.42 0.44 0.50 0.50 0.45 0.50 0.50 Follow these steps exactly to complete this prelab: a) Enter the data into an Excel spreadsheet arranged exactly as it is above. b) Calculate the average and standard deviation of each row c) Calculate the electric fields between each row, as well as the average value and uncertainty of the field, as described in sections 2.3.6 and 2.3.7. Assume the spacing between rows is 1 cm. d) Use Excel to create a surface plot, as described in part 3 of the lab. e) On one page, print your entire spreadsheet- including the surface plot- and hand-draw arrows showing the electric field direction over the surface plot. You will be handing in this printout as your prelab. (You are advised to take the time to make sure your spreadsheet is well formatted and correctly labeled before printing it out.) Your prelab must be printed and handed in, but you should keep a copy of the Excel files so you can use them again during the lab to speed up sections 2 and 3
