Electric Fields and Potentials Lab Report

# Electric Fields and Potentials Lab Report - Electric Fields...

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Electric Fields and Potentials Physics 105 Lab Section 432: Daniel Keever January 24, 2007 Josh Kahn Lab Partner: Carl Anderson "I pledge that I have neither given nor received any unauthorized assistance on this assignment. Signed:_________________________"

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In this experiment, we investigated the properties of electric fields, electric potentials, and the relation to the charge distributions that produce them. Three configurations of electric terminals were connected to a 12-volt power supply in order to test these properties. Each of the three configurations was tested with a voltage probe: parallel line, line and triangle, and concentric circles. The voltage probe was used to locate equipotential lines between the two electrodes by identifying various points that had the same electrical potential. Each part of the experiment resulted in electric fields and potentials that were consistent with what was expected. None of the experimental equipotential lines ever intersected and the electric field lines intersected each of the equipotentials at 90 degree angles, confirming the scientific properties of potentials. In part one of the experiment, the voltage between the parallel lines configuration increased from the negative to the positive terminal. The slope of the potential between the two parallel lines equaled 103.63 +/- 0.01 V/m. In part two, the line and triangle configuration displayed the fact that the electric field is the greatest by the tip of the positively charged triangle, shown by the high density of field lines at this point. In the third part, the electrical difference in the center of the concentric circles was close to a constant 12 V. The electrical potential gradually decreased between the positive inner circle and the negatively charged exterior circle and dropped off to zero outside of the exterior circle. Data and Results Parallel Lines Table 1: Electric Potentials (V) for parallel lines configuration x (meters) Voltage (V) 0.00 0.792 +/-0.003 0.01 0.761 +/-0.003 0.02 0.680 +/-0.003 0.03 0.590 +/-0.003 0.04 0.507 +/-0.003 0.05 0.390 +/-0.002 0.06
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## This note was uploaded on 11/27/2011 for the course PHYS 105 taught by Professor Walker during the Fall '08 term at UNC.

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Electric Fields and Potentials Lab Report - Electric Fields...

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