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A charged particle having some mass is r...

A charged particle having some mass is resting in equilibrium at a height H above the centre of a uniformly charged non conducting horizontal ring of radius R. The force of gravity acts downwards. The equilibrium of the particle will be stable:

A

`( g)/( 2) ((r )/( h ))^(2)`

B

`( g)/( 2) ((h )/( r ))^(2)`

C

`( g)/( 4) ((r )/( h ))^(2)`

D

`( g)/( 4) ((h )/( r ))^(2)`

Text Solution

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The correct Answer is:
A
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