AutoSave OFF wa Lab 6 Resistance of a Wire(1)~ Q Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Calibri (Bo... v 12 AD AaBbCcDdEe AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCCDdEE Paste BIUvab X X A DAY Norma No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane Resistance of a Wire Purpose Examine the factors that affect the resistance of a wire. Resistance of a wire: Pcu = 1.7 x 10-8 0 . m L R = PA PAL = 2. 7 X 10-8 0 . m p - resistivity, in Q . m L - length, in m A - cross-sectional area, in m2 A = mr2 Procedure Go to: http://www.thephysicsaviary.com/Physics/Programs/Labs/ResistanceOfWireLab/index.html Part 1: Resistance vs. Length 1. Click on the begin button to start the lab. 2. Make sure that your wire type is set to Nichrome and then measure the radius of the wire by using the wire cross-section in the bottom left of the program display. You will not be changing either of these factors in part one of this lab. Record the wire type and the radius in the Data Sheet. 3. Record the resistance of the wire for 10 unique lengths. Use Excel or Google Sheets to plot R vs L. Label your axes and provide a meaningful title for your graph. Take a screenshot of the graph and include in your lab report. 5. In a sentence or so, give the relationship between the length of a wire and its resistance. Page 1 of 6 610 words English (United States) Focus E + 116%AutoSave e of a Wire(1) Home Insert Draw Design Layout References Mailings Review View Q Tellme '12\" v [X Calibri(Bo... v 12 v AA AV Aav A) meg Er uvae x2 x' Av/vAv :l'n Normal No Spacing Heading1 Heading 2 Part 2: Resistance and ere Thickness 1. Keep your wire set as Nichrome and make sure that your wire is at least 2 meters long. Write down the exact length of the wire you will be using and make sure you don't change this parameter through the course of Part 2. Record the wire type and the length on the Data Sheet. 2. Record the resistance of the wire for 10 unique radii. You will get the cross-sectional area using the formula for the area of a circle. 3. Use Excel or Google Sheets to plot R vs A. Label your axes and provide a meaningful title for your graph. Take a screenshot of the graph and include in your lab report. 4. In a sentence or so, give the relationship between the cross-sectional area of a wire and its resistance. Part 3: Wire Type 1. For this part of the lab you will be switching your wire between copper and aluminum. You will not be changing the thickness of the wire. Make sure you write down the radius of the wire you will be using for this part of the lab. 2. Randomly generate a certain length of wire and then switch from copper to aluminum and write down both resistances. Don't change your length until you have taken both readings. 3. Collect data for 10 unique lengths. 4. Use Excel or Google Sheets to plot R vs L for copper and aluminum. Label your axes and provide a meaningful title for your graph. 5. Add a trendline (use linear fit) for both copper and aluminum and display the equations of line on your graph. Take a screenshot of the graph and include in the lab report. 6. What does the slope represent? 7. Use the slope to find the resistivity p of copper and aluminum. Show your work, 8. Calculate the percent error for the resistivities you found. Title Subtitle AaBchDdEe AthCchEe AaBbCCD( AaBchDdEs AaBb( AaBchDdEt > Q L!J V F V Styles Dictate Sensitivity Pane 13 share D Comments Page 2 of 6 610 words II' English (United States) . Focus _ u + 115% AutoSave OFF wa Lab 6 Resistance of a Wire(1) ~ Q Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Calibri (Bo... v 12 Ap 24 T AaBbCcDdEe AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCCDdEE Norma No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Paste BIUvab X X A L Av Pane Part 1: Resistance vs. Length Wire type: Radius: L (m) R (2 ) Relationship between R and L: Part 2: Resistance vs. Wire Thickness Wire type: Length: Page 3 of 6 610 words English (United States) Focus E + 116%AutoSave OFF w Lab 6 Resistance of a Wire(1) ~ Q Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Calibri (Bo... v 12 Ap AaBbCcDdEe AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCCDdEE Paste BIUvab X X A DAY Norma No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane r (m) A (mz) R (Q) Relationship between R and A: Part 3: Wire Type Radius: mm = m Area: m2 Page 4 of 6 610 words English (United States) Focus + 116%AutoSave OFF w Lab 6 Resistance of a Wire(1) ~ Q Home Insert Draw Design Layout References Mailings Review View ? Tell me Share Comments Calibri (Bo... v 12 A" A Aa Ap 121T AaBbCcDdEe AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCCDdEE Paste BI U vab X x |A DAY Norma No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane L (m) Rcu (2) RAL (2) Copper Equation of trendline: R/ L = (from the equation of trendline) P = n . m (show work) Percent error: (show work) Aluminum Equation of trendline: R/L = (from the equation of trendline) P= n . m (show work) Percent error: (show work) 5 Page 5 of 6 610 words English (United States) Focus E + 98%