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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 equilibrium of the particle will be stable .

A

for all values of H

B

only if ` H gt (R)/(sqrt2)`

C

only if ` H lt (R)/(sqrt2)`

D

only if ` H = (R)/(sqrt2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Since electric field due to ring will be maximum at ` H = R/(sqrt 20`.
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