physics lab 9

# physics lab 9 - March 7 2015 Lab Report for EC1 VI-1 The...

• Lab Report
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March 7, 2015 Lab Report for EC1 VI-1: The data from table V1 can be found below. The values of R exp and the percent difference are found calculated below. R 1 = 30 Ω σ I = 0.5 mA σ V = 0.001 V Resistor A Resistor B Resistor C Resistor D V 3.049V 4.471V 8.039V 10.217V I 20mA 20mA 20mA 20mA R exp = V/I 152.5Ω 223.6Ω 402Ω 511.0Ω R m 148.0Ω 216Ω 385.0Ω 983.0Ω Using Ohm’s Law and the voltage and current from our measurement, we were able to obtain the Resistance of each resistor. Using the equation from EC0, we were able to calculate uncertainty. Resistor A σ V = 0.001 V σ I = 0.5 mA = 0.0005 A V = 3.049V I = 20 mA = 0.020 A I V R R 3.049 V 0.020 A = 152.5 Ω 2 2 I V R I V R R 152.5 0.001 V 3.049 V 2 0.0005 A 0.020 A 2

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R 156.5 0.0250021513  5 . 156 0500040827 . 0 R = 3.912836675Ω Yes, the DVM measured resistance does fall into the range determined from the measurements of voltage and current. Resistor B σ V = 0.001 V σ I = 0.5 mA = 0.0005 A V = 4.471V I = 20 mA = 0.020 A I V R R 4.471 V 0.020 A = 223.6 Ω 2 2 I V R I V R R 223.6 0.001 V 4.471 V 2 0.0005 A 0.020 A 2 R 223.6 6.250500254*10 ^ 4 R 6.250500254*10 ^ 4 223.6 = .1397611857 Ω
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• Spring '14
• Whitmire,SE
• Physics, Resistor, Electrical resistance, Series and parallel circuits, DC Power Supply, Rexp

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