Two charges -q and +q are located at points (0, 0, -a) and (0, 0, a), respectively.(a) What is the @PhysicsMasterAcademy

Uploaded March 2026 | Updated September 2026, 3 weeks ago

Question no. 2.21- Two charges -q and +q are located at points (0, 0, -a) and (0, 0, a), respectively.
(a)- What is the electrostatic potential at the points (0, 0, z) and (x, y, 0) ?
(b)- Obtain the dependence of potential on the distance r of a point from the origin when r/a 1.
(c)- How much work is done in moving a small test charge from the point (5,0,0) to (-7,0,0) along the x-axis? Does the answer change if the path of the test charge between the same points is not along the x-axis?
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