Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A particle of charge
and mass
moves in a circle of radius
around an infinitely long line charge of linear density
. Then, the time period will be
Text Solution
Verified by ExpertsThe correct answer is:
A
The electric force on charge due to infinitely long wire provides a centripetal force.
Electric field around an infinite line charge is calculated using Gauss' law

Now, particle is moving in a circle. So, centripetal force is provided by electric force, 

Now the time period, 
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