A charge Q is distributed uniformly around a thin ring of radius b which lies in the xy plane with its centre at the origin. Locate the point on the positive z-axis where the electric field is the strongest.

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Hubert KochLv2

13 Jul 2019

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Assume a uniformly charged ring of radius R and charge Q produces an electric field At a point on its axis, a distance x away from the centre of the ring. Now the same charge Q is spread uniformly over the circular area of the ring encloses, forming a flat disk of charge with the same radius. How does the electric field By the disk at point P compare with the field produced by the ring at the same point?

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Consider a uniformly charged ring in the XY plane, centered at the origin. The ring has a radius and positive charge distributed evenly along its circumference.

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