lab3 - Introduction The purpose of this lab was to compare...

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Unformatted text preview: Introduction The purpose of this lab was to compare metals and semiconductors electrical properties. Also, to examine how conductivity alters under the influence of a temperature change. This was done using digital multimeters and solution baths set at different temperatures. Procedure For each given sample, use the digital multimeter to measure the resistance at six temperatures (0 ice water, 25 room temp., 50 water bath , 75 water bath, 100 boiling water, 125 Glycerol). Connect the electrode and record the resistance and temperature. Be sure to record the correct units (Ohm) when using the autoscale function. Results Table 1 . Resistivity, conductivity, and resistance Temperature Resistance A/l Resistivity Conductivity Copper (C) (Ohm) (m) (Ohm m) (Ohm m)-1 ln ( ) T (K) 1/ T (K-1 ) T1 = 0 C 5 8.40 2.01E-09 1.69E-08 59209996.54 17.90 278.15 3.60E-03 T2 = 25 C 30 9.20 2.01E-09 1.85E-08 54061301.19 17.81 303.15 3.30E-03 T3 = 50 C 48 10.10 2.01E-09 2.03E-08 49243957.52 17.71 321.15 3.11E-03 T4 = 75 C 85 10.90 2.01E-09 2.19E-08 45629722.11 17.64 358.15 2.79E-03 T5 = 100 C 100 11.60 2.01E-09 2.33E-08 42876204.39 17.57 373.15 2.68E-03 T6 = 125 C 110 11.80 2.01E-09 2.37E-08 42149489.06 17.56 383.15 2.61E-03 Kanthal Alloy T1 = 0 C 5 88.50 1.27E-08 1.12E-06 889719.29 13.70 278.15 3.60E-03 T2 = 25 C 30 89.80 1.27E-08 1.14E-06 876839.17 13.68 303.15 3.30E-03 T3 = 50 C 48 90.80 1.27E-08 1.15E-06 867182.35 13.67 321.15 3.11E-03 T4 = 75 C 85 90.80 1.27E-08 1.15E-06 867182.35 13.67 358.15 2.79E-03 T5 = 100 C 100 91.60 1.27E-08 1.16E-06 859608.71 13.66 373.15 2.68E-03 T6 = 125 C 110 91.50 1.27E-08 1.16E-06 860548.17 13.67 383.15 2.61E-03 Silicon T1 = 0 C 5 11300.00 1.43E-04 1.61E+001....
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lab3 - Introduction The purpose of this lab was to compare...

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