Physics 202 - Equipotential

Physics 202 - Equipotential - Chapter 7 Equipotential...

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Lab 1: EQUIPOTENTIALS Physics 202 Mondays 3:35-5:35 Report Due September 12, 2005 Abstract We evaluated equipotential contours for three different geometries in order to determine the relationship between the potentials and the electrical field lines. Using a battery connected to electrodes and a probe to measure the different potentials, we located electrical field lines and recorded the voltage. The results indicated that the electrical field lines are curved when using the point equipotentials and straight when using the parallel plates. In addition, the potential gets smaller as you move towards the positive charge and the voltage is proportional to the distance from the positive charge.
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Introduction Determining the voltage between two different conductors depends largely upon the shape of the conductors and distance between them. Because equipotentials are hard to measure, abstract in nature, and can yield significant uncertainty measures, we investigated equipotentials using a two- dimensional analysis. The experiment was conducted using a shallow tray of electrolyte, which in this experiment was tap water, to measure the voltage between the two conductors. In this experiment we evaluated the specific relationship between the electrical potentials and the electrical field lines. The experiment was conducted using three different geometries including two point charges, parallel plates, and a combination of a point charge and parallel plate. We then made a comparison of the relationship between the equipotentials and the electrical field lines. Procedure Equipotential contours for three different geometries were evaluated to determine the relationship between the electrical field lines and the potentials. Roughly a centimeter of water was placed in a pan. Beneath the glass pan a piece of graph paper was placed to use as a coordinate system when measuring the location of the various potentials. We then connected jumper wires from the battery to the various electrodes. The negative lead was attached to the negative battery and the positive
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Physics 202 - Equipotential - Chapter 7 Equipotential...

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