Electric filed:
Consider a point with the point z, located on the positive z-axis. The ring has a radius a. An electric field vector originating from an element of charge on the ring makes an angle θ with the z-axis.
The adjacent side has a length z, the opposite side has a length a and the hypotenuse is equal to (z2 + a2)(1/2). The net electric field is directed along the z-axis.
Consider a uniformly charged ring in the xy plane, centered at the origin. The ring has radius a and positive charge q distributed evenly along its circumference.
What is the magnitude of the electric field along the positive z axis?
Use k in your answer where:
E(x) = ______
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