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A particle of charge ' \(-q\) ' and mass ' \(m\) ' moves in a circle of radius ' \(r\) ' around an infinitely long line …

Q1

A particle of charge ' \(-q\) ' and mass ' \(m\) ' moves in a circle of radius ' \(r\) ' around an infinitely long line charge of linear charge density ' \(+\lambda\) '. Then time period will be given as :
(Consider \(k\) as Coulomb's constant)

a

\(T=\frac{1}{2 \pi r} \sqrt{\frac{m}{2 k \lambda q}}\)

b

\(T=\frac{1}{2 \pi} \sqrt{\frac{2 k \lambda q}{m}}\)

c

\(T=2 \pi r \sqrt{\frac{m}{2 k \lambda q}}\)

d

\(T^2=\frac{4 \pi^2 m}{2 k \lambda q} r^3\)

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