# Electric Charge from a ring?

In a uniformly charged ring of radius r, if there is an imaginary line from the center of the ring extending outward
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At the center of the ring Im told the charges cancel so the net charge is zero. And at infinity, the charge is so small it approaches zero.

Going out from the ring, there is some point X where the charge is greatest.

Why does this effect take place? How to figure out the field energy lines that have an effect on point X?

tia

$$E=K\frac{qz}{(z^2+R^2)^\frac{3}{2}}$$