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Ohm's Law Physics Lab #20
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- Words:
- 777
- Submitted:
- Sun Aug 03 2003
... Ohm's Law Physics Lab #20 Name: Diana Abou Hassan Partners: Sara Jaber Michael Muhanna Rami Jachi Date Performed: 14/11/2002 Date Due: 21/11/2002 Teacher: Mrs. Khoury Saab Objective: The objective of this lab is to determine the relationship between the potential difference across a conductor and the electric current through it. \ Materials: - Low voltage variable DC power supply\ - Two different resistors - 2 digital multimeters - connecting wires Procedure: Please refer to lab sheet. Data Collected: Resistor 2 Voltage (V) 1 1.5 2 2.5 3 3.5 Current (mA + 0.01mA) 0.42 0.72 1.16 1.56 1.91 2.30 Potential Difference (V + 0.001V) 0.526 0.877 1.404 1.893 2.324 2.796 Resistor 7 Voltage (V) 1 1.5 2 2.5 3 3.5 Current (mA + 0.01mA) 0.08 0.18 0.27 0.35 0.45 0.54 Potential Difference (V + 0.001V) 0.466 0.944 1.395 1.843 2.359 2.793 Resistor 2 = 1.202 K? Resistor 7 = 5.07 K? Light Bulb Before lighting up: Voltage (V+ 0.0001V) 0.0069 0.0781 0.5780 0.6560 0.7590 Current (mA+ 0.01mA) 0.90 10.50 81.30 92.40 109.70 The light bulb lit up at: Voltage (V+ 0.0001V) 1.0010 Current (mA+ 0.01mA) 149.30 After lighting up: Voltage (V+ 0.0001V) 1.6090 1.8310 2.116 Current (mA + 0.01mA) 182.30 200.00 223.50 Data Analysis: Calculate the slope of each graph: Sample Calculation: Slope of Resistor 2 = (y2 - y1) / (x2 - x1) = (2.30 V - 0.42V )/(2.796mA - 0.526mA) = (2.30 V - 0.42V )/(0.002796A - 0.000526A) =
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