Electric Potential Homework: Find V at P & R, What if x,y>>a?

AI Thread Summary
The discussion revolves around calculating the electric potential at points P and R due to a uniformly charged rod of length a and total charge Q. The potential at point P, located a distance x to the right of the rod, and point R, a distance y above the right end of the rod, is derived using the equation V = (9.0 x 10^9) * integral(dQ/r). Participants express confusion about the variables involved, particularly the meaning of r in the context of the problem. As x or y becomes much larger than a, the potential simplifies, indicating a transition to a point charge approximation. The thread highlights the need for clarification on the integration process and the significance of distance in electric potential calculations.
mr.alhassan
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Homework Statement


The image related with this problem is attached.
Electric charge is distributed uniformly along a thin rod of length a. with total charge Q. Take the potential to be zero at infinity. Find the potential at the following points (a) point P, a distance x to the right of the rod, and (b) point R, a distance y above the right-hand end of the rod. (c) In parts (a) and (b), what does your result reduce to as x or y become much larger than a?


Homework Equations



V = (9.0(10^9) * integral(dQ/r)


The Attempt at a Solution



I have no idea how to solve it.
 

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Try to show some attempt. What is r?

ehild
 

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