Consider again the text example of a thin plastic rod of length L that has a positive charge Q uniformly distributed along its length. Our test point is now going to be a distance y above the end of the rod. L- Q (a) We want to find the field at our new test point. What in the analysis of the previous problem do we need to change? (b) Are either of the components of the net field at the new test point zero? If so, which? If not, how does the calculation of the y component differ from the calculation of the x component? (c) Leveraging as much as you can the work you and the text already did, find an expression for the magnitude of the net field at the new test point.

Consider again the text example of a thin plastic rod of length L that has a positive charge Q uniformly distributed along its length. Our test point is now going to be a distance y above the end of the rod. L- Q (a) We want to find the field at our new test point. What in the analysis of the previous problem do we need to change? (b) Are either of the components of the net field at the new test point zero? If so, which? If not, how does the calculation of the y component differ from the calculation of the x component? (c) Leveraging as much as you can the work you and the text already did, find an expression for the magnitude of the net field at the new test point.