Question

A point charge q of mass m is located at the centre
of a ring having radius R and charge Q with its axis
oriented along X-axis. When the point charge is
displaced slightly, it accelerates along the X-axis
to infinity; the ultimate speed of the point charge
(consider no energy loss in radiation) is :-​

Answer 1

Answer:

V= ✓ 2KqQ

Rm

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