A particle of mass m and carrying charge 
is moving around a charge 
along a circular path of radius r 
period of revolution of the charge 
about 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Suppose that the charge 
moves around the charge 
along a circular path of radius r with speed v 
The necessary centripetal force is provided by the electrostatic force of attraction between the two charges i.e.,
Or 
If T is period of revolution of the charge 
about 
then
Substituting for v, we get 
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