Ohm's+Law+++++++Jordan+Anderson,+Aaron+Floyd,+and+Tyler+Naughton

__Title of Lab:__ Ohm's Law

__Researchers:__ Jordan Anderson, Aaron Floyd, and Tyler Naughton

__ Research Question: __ What is the relationship between the voltage across an Ohmic device and the current flowing through the device?

__ Research: __ Ohm's Law ( V=IR ) states that the current between two points in a conductor is directly proportional to the voltage. So as the amps increase so too should the voltage. This is a picture of our experiment setup.

__Hypothesis:__ There will be a directly proportional linear relationship using the equation V=IR. Therefore, as the current is increased, the voltage is increased as well.

__Materials__: Voltage Source, Ammeter, Voltmeter, wires, resistor

__Procedure:__

1.) Before plugging everything into one another, search on the wires for any cuts or lumps because those may cause for the user to be damaged.

2.) Plug the <span style="background-color: transparent !important; background-position: initial initial !important; background-repeat: initial initial !important; border: none !important; display: inline !important; float: none !important; font-family: arial,helvetica,sans-serif !important; font-size: 13px !important; font-style: normal !important; font-variant: normal !important; font-weight: normal !important; height: auto !important; line-height: 19.5px !important; margin: 0px !important; min-height: 0px !important; min-width: 0px !important; padding: 0px !important; text-decoration: underline !important; vertical-align: baseline !important; width: auto !important;"> supply in, and then plug wires into DC (note do not plug into AC because those two are entirely different.)

3.) Plug the two wires to the ends, you earlier plugged into the DC, and place one directly to one on the ammeter and the other one to the resistor.

4.) Plug the resistor into the ammeter.

5.) Turn the Voltmeter on to 20 volts (Note: change immediately if the data hits exactly 20 volts because the volt meter cannot read any higher.)

6.) On the Voltmeter are two little metal probes, one red and one black, take those and have one touch one side of the resistor and the other at the opposite end( note if negative switch the positions on the resistor).

7.) Slowly increase the amount of current by .20 amps ( Note stop immediately if resistor starts smoking or smells like burning.)

8.) Record the Amps and Voltage.

9.) To limit error touch both ends of the <span style="background-color: transparent !important; background-position: initial initial !important; background-repeat: initial initial !important; border: none !important; display: inline !important; float: none !important; font-family: arial,helvetica,sans-serif !important; font-size: 13px !important; font-style: normal !important; font-variant: normal !important; font-weight: normal !important; height: auto !important; line-height: 19.5px !important; margin: 0px !important; min-height: 0px !important; min-width: 0px !important; padding: 0px !important; text-decoration: underline !important; vertical-align: baseline !important; width: auto !important;"> probes to where they read zero and then change the current level.

10) Repeat steps 7-9 until you have reached 2.0 amps (due to that is the range when resistor starts to smoke.)

__ Data: __ Data Analysis The graph of our data was represented by y=74.109x+.2555. The slope of 74.109x is the value of the resistance of our system in Ohms. The y=intercept shows where at 0 Amps, our voltage is .2555 V. This means there was some human error likely cause by lack of calibration, lack of precision of instruments, or a previously damaged resistor. Our Grey-Brown-Black-Gold resistor should have had a resistance of 81 Ohms, meaning we had a percent error of 8.51%. Since our resistor had a 5% tolerance, this gives us between a 3.51 and 13.51% error. C__ onclusion:  __ Our hypothesis was supported in this experiment. As we increased the amount of current, the voltage increased along a linear relationship. However, our experiment was full of human errors that did affect the results. In the future, we could try using different ammeters, voltmeters, and resistors to further improve upon our experiment.
 * Current(Amps) || Voltage(Volts) ||
 * 0.00 || 0.00 ||
 * .020 || 1.52 ||
 * .040 || 3.28 ||
 * .060 || 4.85 ||
 * .080 || 6.45 ||
 * .100 || 7.85 ||
 * .120 || 9.26 ||
 * .140 || 10.66 ||
 * .160 || 12.16 ||
 * .180 || 13.45 ||
 * .200 || 14.85 ||