Potential of a Finite Rod

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A finite rod of length L has total charge q, distributed uniformly along its length. Therod lies on the x -axis and is centered at the origin.Thus one endpoint is located at (-L/2, 0), and the other is locatedat (L/2, 0). Define the electricpotential to be zero at an infinite distance away from the rod.Throughout this problem, you may use the constant k in place of the expression \frac{1}{4\pi\epsilon_0}.
Part A
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What is V_A, the electric potential at point A (seethe figure), located a distance d above the midpoint of the rod on the yaxis?
Express your answer in terms ofL, d, q, and k.
Part A picture

Part B

What is V_B, the electric potential at pointB, located at distance d from one end of the rod (on the xaxis)?

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Give your answer in terms ofq, L, d, and k.

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