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A ring of radius R carries a charge +q. ...

A ring of radius R carries a charge `+q`. A test charge `-q_0` is released on its axis at a distance `sqrt3` R from its centre. How much kinetic energy will be acquired by the test charge when it reaches the centre of the ring ?

A

`1/(4piepsilon_0)(qq_0)/R`

B

`1/(4piepsilon_0)((qq_0)/(2R))`

C

`1/(4piepsilon_0)((qq_0)/(sqrt3R))`

D

`1/(4piepsilon_0)((qq_0)/(3R))`

Text Solution

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The correct Answer is:
B
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