Equipotentials - Equipotentials Lab 2 Cycle 1 Physics 202...

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Equipotentials Lab 2 Cycle 1 Physics 202 Monday 7-9 Due: Monday February 12, 2007 Abstract Equipotential contours were investigated to explore the relationship between electric potentials and electrical field lines. Three different geometries were used in order to further investigate the relationships. In doing so, we were able to determine that equipotential lines always stay perpendicular to the electric field lines in that what ever geometry the electric field obtains determines the geometry of the equipotential lines. Introduction
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In this experiment, we studied the field of equipotentials. An equipotential surface is a surface where the potential is the same value at all of the same points on the surface. To understand this, one must consider a set of charges that will create an electrostatic field in a given region. Therefore, within that region all the points that have the same value of potential will form a 3-D surface in space. Basically, they are surfaces with constant voltage. Therefore, you can map the equipotential curves that surround different charged conductors. One way to do this is to use a voltage probe to sample the electrostatic potential at various points on the non-conducting surface. This is an accurate way to understand and map equipotentials. Equipotentials can be studied to understand the relationship between potentials and electrical field lines. Figure 1: Positive and Negative Contoures Figure 2: Diagrams of Electric Field Lines that are perpendicular to the potential.
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Procedure When we got to the lab there was a glass pan that was filled with water that was 1 cm deep. Under the pan was a piece of graph paper that had an x and y axis. The pan was placed on top of the graph paper so that the origin of the graph was as close to the center of the pan as possible. The first part of the lab began with using two point charges as our electrodes. We used the jumper wires to connect the electrodes to the battery. The meter was also hooked up to the electrodes in that the negative lead was hooked up to the negative battery terminal and the positive lead was hooked up to the moveable probe, also making
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Equipotentials - Equipotentials Lab 2 Cycle 1 Physics 202...

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