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A point charge q of mass m is located at...

A point charge q of mass m is located at the centre of a ring having radius R and charge Q. When it is displaced slightly, the point charge accelerates along the x-axis to infinity, the ultimate speed of the point charge :-

A

`sqrt((2kQq)/(mR))`

B

`sqrt((kQq)/(mR))`

C

`sqrt((kQq)/(2mR))`

D

zero

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The correct Answer is:
A
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MOTION-ELECTROSTATICS-Exercise - 2 (Objective Problems | NEET)
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