Procedure 1. Determining the resistance of a pencil lead. The Ohm's law can be used to find electrical properties, namel

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i need all the answers below in RED and BLUE to be answered please and show calculations and explanations my set of parameters are attached as well at the bottom please answer all questions for part A,B,C i took pictures of the lab manual as well as the logger pro graphs and then zoomed in on the graph information so you can see better

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Procedure 1. Determining the resistance of a pencil lead. The Ohm's law can be used to find electrical properties, namely the resistance of any conductor. In this experiment you will apply the Ohm's Law to determine the resistance of a virtual pencil lead. You will measure the current through the pencil lead and the voltage drop across this element for a few output voltages delivered by the battery. Next, you will present the data graphically, plotting I PENCIL VS. VPENCIL, and analyze the plot to find the resistance of the simulated pencil. Open the PhET Interactive Simulations web page http://phet.colorado.edu/en/simulation/circuit- construction-kit-de-virtual-lab and download the Circuit Construction Kit (DC Only), Virtual Lab. Using the circuit components from the right tool menus and the Grab Bag options (that is where you find the pencil lead) construct the circuit similar to the one shown in Fig. 1.2. Please note that the ammeter is connected in series with the pencil while the voltmeter leads are attached to the pencil tips in parallel fashion (the red lead of the meter touches the pencil end of the higher potential and the black lead is connected to the end of the lower potential). Right click on the battery allows you to select the "Change Voltage" option, which opens the voltage selection window as seen in Fig. 1.2. For your convenience, please, leave this window open
By adding the internal resistance of the battery we will make this circuit behaving even more life- like-right click on the battery again and change its internal resistance to 7 22. Apply 5 different voltages from the battery, ranging from 0 to 100 Volts. After adjusting the battery voltage to the desired value (you may use the slider or type the value in the box), close the switch and record the current measured by the ammeter, IPENCIL, and the voltage detected by the voltmeter, VPENCIL Open the LoggerPro program available in MyApps on My ASU site. The default screen contains a two-column data table and a graph window. Enter the VPEncu data (expressed in Volts, V) in the first column, and the IPENCIL values (expressed in Amperes, A) in the second column. Double click the heading of each column to change its name ( XV, Y-I), enter the units for the typed-in data and select the number of decimal places you wish to be displayed. Create a new calculated column for the resistance R expressed in Ohms. Hint: To add a calculated column to the data table select "Data" in the upper tool bar options, and then "New Calculated Column...". In the equation field type "V"/"I", where V and I should be chosen from the pull down Variables selection. After entering the experimental data in the table you should automatically see them being plotted in the graph window. As a good scientific habit you always want to show only the collected data points without the lines in-between them. So, double click on the graph window and uncheck the option "Connect Points". Apply the linear fit to your set of data. Double click on the small window with the fit parameters and select show uncertainty. From the slope calculate the resistance of the virtual pencil. Propagate the uncertainty in the slope into the uncertainty of the experimental resistance of the pencil. Re-scale the whole graph window to about half of the available screen space, without covering the data table. Insert a second graph displaying the resistance calculated in the third column on both axis of the new graph. Again, uncheck the "Connect Points" option. Re-
scale this graph window to fit into the space remaining on the page. By dragging around with the mouse, select all data points of this plot and apply statistics from the Analyze menu. Save the LoggerPro file for future reference. How does the mean value displayed in the statistics window compare to the resistance computed from the slope of the first graph? State the measured resistance of the virtual pencil lead along with its uncertainty. Remember to express the uncertainty with just one (or maximum two) sig figure(s) and adjust the number of decimal places in the main result appropriately. Based on your data conclude whether the virtual pencil was an ohmic element or not. Capture the screen with the LoggerPro file and paste it into MS Word - you will have to attach it to your lab report. It is recommended to use the landscape orientation for the page layout in MS Word. If you assume that the virtual pencil lead was made out of material of resistivity p = 3.5x1012-m (a composition of graphite) and the diameter of the lead was 0.6 mm, how long was the pencil? On average the real pencil rod has a diameter of 2.4 + 0.1 mm and the length of 18.0 + 0.1 cm. If it was made of the same material as the virtual pencil what resistance would it have? Propagate the errors in the dimension measurements into the final uncertainty of the calculated resistance. w
3 Data Set Vpenda (V) A (Ohm) 1563 063 24 BIO 3125 25.000 46.88 1.88 24930 625 25 25.000 78.13 3.13 249052 125 BUSUN 0 10 11 12 13 14 Linear it for Data Seti bencil mb m (Son) 0.04000. 6144E-05 Die intercept) 0002079 +0003184A Correlation 1.000 RMS 0003036 A 2 Dance A 2500 24 95 24.90 RDIO 1 Statistics for Data SetRD min 24 B1 at 24 81 max 2500 25.00 mean 24 94 median 24 96 std dev 0.07858 samples 5 AR0.190 24 85 24 80 24 BD 2485 24.05 2500 10 24 90 Rap (Ohm) Vpenal v
Linear Fit for: Data Set pencil lp = mx+b m (Slope): 0.04000 +/- 6.144E-05 AN b (Y-Intercept): 0.002879 +/-0.003184 A Correlation: 1.000 RMSE: 0.003036 A
Statistics for: Data Set|R_p min: 24.81 at 24.81 max: 25.00 at 25.00 mean: 24.94 median: 24.96 std. dev: 0.07858 samples: 5 AR: 0.190 1
A. Determining the resistance of a pencil lead. . Screen capture of the circuit used for measuring the resistance of the virtual pencil Fig 1. Resistance Virtual Pencil . ! Voltage 0001 OD Top circuitent to eat Circuit Construction Kit DC. Virtual Lab 40 PHET O
Internal battery resistance R=7(92) (See Modules on Canvas for R value] 20 40 60 80 100 Any values between 0-100 Yhutters (V) TPENCIL. (A) 0.63A 1.25A 1.88A 2.SOA 3.13A VPENCIL (V) 15.63V 31.25V 46.88V 62.50V 78.137 . Screen capture of the Logger Profile showing the data table and the plot of Irenent vs VENCIL and RPENCIL VSRPENCH, for the virtual pencil, with linear fit. Change the size to fit the screencapture Fig.2: m (slope) (unit): Am (unit) R = 1 m (unit), AR = (unit) [show calculation] Rean (unit), % diff= Based on your data conclude whether the virtual pencil was an ohmic element or not
B. Virtual pencil lead (VP) P- (from part A) (l:m.) Ryp= D (mm); Area = [See Module 5 on Canvas for p and D values] L = (m) C. Real pencil rod (RP) p= (22-m), D +AD + (mm), L + AL= + (cm [See Module 5. on Canvas for D. AD. L and AL values. p is the same as in part B] RRP (unit); ARRP (unit) [show calculation]
Set of Parameters for Lab 4 A Dear Students, Please use the following values in your lab report and continue the work accordingly: Part IA: R=712 Part 1B: p= 3.5x10-4 12.m, D=0.6 mm Part IC: D = 2.4 mm, AD 0.1 mm, L= 18.0 cm, AL 0.1 cm