potential

The diagram of a point charge from a charged ring and on the right is an excel worksheet of us trying to determine the potential of the ring using sums of segments. then we moved the particle up to where it was parallel to the top of the ring and did the same thing. what we found was that the potential at this point is much higher than that at the center of the ring. this is because the potential from the bottom to the top of the ring is greater than from the center to the edges. 

we derived a formula for the potential of a point charge anywhere in the xy plane from the center of a finite bar. then we derived another formula for if the distance was from the point charge to any point on the bar. 

In this experiment we observed the potential difference between a point charge and a line. using a current of 12V we measured incrementally from the point toward the line. using this data found in the excel ws, we found a graph that did not fit our predictions. our potential vs distance is inversely proportional however the points deviated a lot from the fit curve. this could be due to the fluctuation of the current flowing through the paper.