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A very thin plastic rod of length L is rubbed with cloth and becomes uniformly charged with a total positive charge Q.

A very thin plastic rod of length L is rubbed with cloth and becomes uniformly charged with a total positive charge Q. In this problem you will be asked to calculate the electric field a distance d from the top of the rod and on axis with the rod at observation location “∗” as indicated in the diagram.

C. Integrate over the charge distribution to determine the electric field vector at the observation location. Your answer should only contain the given variables L, Q, d and known constants.

D. What is the field in the limit the observation location is far from the tip of the rod. Your answer should only contain the given variables Q, d and known constants.

y X p


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