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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 center of a uniformly charged non-conducting horizontal ring of radius ` R`. The equilibrium of the particle will be stable .

A

For all values of H

B

Only if `H gt (R)/(sqrt(2))`

C

Only if `H lt (R)/(sqrt(2))`

D

Only if `H = (R)/(sqrt(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
Only for `H gt R/sqrt2` force will be restoring on displacing slightly.
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