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Electric Field due to charged Circular Ring #8211; Electric field due to a charged circular ring of radius R and charge Q at a distance x from the centre of the ring on its axis is given by At centre, x = 0, so E<sub>centre</sub> = 0. At a point on the axis such that x gt;gt; R, E = kQ/x<sup>2</sup> If x = ±R/√2, then [E<sub>max</sub> = 2kQ/3√3R<sup>2</sup>]
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