There is a uniformly charged ring having radius \(R\). An infinite line charge (charge per unit length \(-\lambda\), where \(\lambda\) is positive constant) is placed along a diameter of the ring (in gravity free space). Total charge on the ring \(Q = 4\sqrt { 2 } \lambda R\).

An electron of mass \(m\) is released from rest on the axis of the ring at a distance \(x=\sqrt{3} R\) from the centre. Find the initial acceleration of the electron.

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