Potential V at point P on the axis of the ring.

[gracy]

Homework Statement

Electric charge Q is uniformly distributed around a thin ring of radius "a".Find the potential at a point p on the axis of the ring at a distance x from the centre of the ring.

Homework Equations

$r$=$√x^2+a^2$

The Attempt at a Solution

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[/B]
I just want to ask distributed around a thin ring of radius" a" does it mean at the distance "a" from the centre of the ring?

 

[BvU]

At a distance from O, yes.