Ohm's+Law-+Tyler+Myers+and+Daniel+Hicks

Title of Lab: Ohm's Law

Researchers: Tyler Myers and Daniel Hicks

Research Question: Experimentally find the relationship between the voltage across an Ohmic device and the current flowing through the device.

Research

(http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/imgmag/resvi.gif)

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Hypothesis: The current and voltage are directly proportional in the same circuit.

Procedure: 1. Connect voltage source to ammeter 2. Connect ammeter to resistor 3. Connect resistor to the voltage source 4. Increase the voltage to a specific reading 5. Measure and record the amps and volts by reading ammeter and voltmeter 6. Repeat steps 4-5

Materials- Voltage Source, wires, resistor, Ammeter, Voltmeter

Data:
 * Current (amp) || Voltage (V) ||
 * .02 || .198 ||
 * .04 || .356 ||
 * .06 || .562 ||
 * .08 || .757 ||
 * .10 || .931 ||
 * .12 || 1.207 ||
 * .14 || 1.338 ||
 * .16 || 1.563 ||
 * .18 || 1.730 ||

Data Analysis: Based off the resistor chart provided in the research, the actual resistance would be 10 ohms for the brown-black-black-gold resistor. The slope of the Current vs. Voltage graph gives the experimental resistance. Our experimental resistance is 9.8 ohms. This means that the percent error is 2%.

Conclusion: Based on the results of our experiment, our hypothesis that the relationship between current and voltage is directly proportional is supported. Because the percent error was only 2%, we can say this with great certainty. The experiment could be improved if we could have used a more accurate ammeter.