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PHY 114 Ohm’s Law Abstract:The purpose of this experiment was to find out the resistance of a resistor from a graph that contained amps vs volts and to determine the value at which power is optimized. There were three parts to this experiment, the first was setting the voltage which was determined to be 361+/- 0.05. The second part was to find the resistivity of graphite and the diameter of the leadΩrod was determined to be 0.22 +/- 0.05 cm, the slope of plotting R vs L was 234.3 +/- 12.19 Ω/cm. The third and final part of this experiment was found by plotting P vs R(l) and the voltage at optimization was 8.193V while the resistor at optimization was 85.40.Ω Experimental Data:Part 1A of this experiment was about finding the voltage with respect to amps of the carbon resistor. First, the nominal value of the carbon resistor had to be determined using the color code, which was 361 +/- 0.05. Next, fifteen voltages (0-15V) were ranged to produce aΩ
graph that showed the relationship of voltage to amps. The slope was determined then used to find the resistance. The resistance was then used to compare to the resistance estimated by using