Lab 1 - Resistance

# Figure 11 datastudio list of data runs data under the

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Figure 11: DataStudio list of data runs data. Under the Experimental Setup menu select “Sampling Options” (Figure ?? . By checking the “Keep data values only when commanded” check box DataStudio will no longer collect data at the sampling frequency but instead you can collect individual data points by pushing the “Keep” button. This collection method will be useful in the subsequent section. Figure 12: DataStudio Sampling Options You have several ways of displaying the collected data. These are listed at the bottom left of the main DataStudio window as shown in Figure ?? . Some will only display the data while it’s being collected (for example the Digits, Meter and Scope tools) where as others will display the data once the Run has been completed (for example FFT, Graph and Histogram tools). In 12

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this list click on the tool you want to use and then select the data run you would like to display. Figure 13: DataStudio list of displays 8.4 Measure Resistor Construct a simple series circuit with the power supply, a resistor value of your choosing and the Current Probe. Take measurements of at least ten different current values starting with a low of about 0.1V and a high of about 2.5V. Record the voltage and current in a data table. 8.5 Measure Lightbulb Construct a simple series circuit with the power supply, a light bulb, and Current Probe Take measurements of at least ten different current values starting with a low of about 0.1V and a high of about 2.5V. 8.6 Analysis of IV Curves Plot the IV curves (voltage on the horizontal axis vs. current on the vertical axis) for both resistors and lightbulb Is the voltage-current relationship different for a light bulb vs. a resistor? Are both curves linear? Is one curve more linear than another? If so, which one? In what voltage range are the IV curves not linear, if at all? Calculate the slope for the more linear curve. What is the physical meaning of the slope for the voltage-current graph? 13
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