To find the electric potential between two charges, we mapped the potential with electric paper, probes connected to a voltmeter, and two dots on the paper to represent charges that are charged by an external power source. The charge on our left was chosen as our test charge. Below is the activity.
This is the graph that we produced after finding the different amounts of potential between the charges. We first began the activity with both probes on our test charge. As one probe went closer to the other charge, the electric potential went up. When the probe left the second charge and continued its path, the change of electric potential became more gradual.
Looking at our graph, the electric field is going in the positive x direction because we are going from low potential to high potential.
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