# $\Phi$

There is a uniformly charged ring having radius $$R$$. An infinite line charge (charge [negative] per unit length $$\lambda$$) 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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