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 `+lamda`. Then, time period will be
where , `k=1/4piepsilon_0)`

A particle of charge -q and mass m moves in a circular orbits of radius r about a fixed charge +Q .The relation between the radius of the orbit r and the time period T is

Charged particle of charge q mass m moves in a circular path of radius r under the action of force F .The equivalent current is

Charged particle of charge q mass m moves in a circular path of radius r under the action of force F .The equivalent current is

A charge moves with a speed v in a circular path of radius r around a long uniformly charged conductor.

A particle of charge q_(1) and mass m is revolving around a fixed negative charge of magnitude q_(2) in a circular path of radius r. Find the time period of revolution.

Find ratio of electric at point A and B. Infinitely long uniformly charged wire with linear charge density lamda is kept along z-axis:

A charged particle q of mass m is in wquilibrium at a height h from a horizontal infinite line charge wit uniform linear charge density lambda . The charge lies in the vertical plane containing the line charge. If the particle is displaced slightly (vertically) prove that the motion of the charged particle will be simple harmonic. Also find its time period.

A charge particle q is released at a distance R_(@) from the infinite long wire of linear charge density lambda . Then velocity will be proportional to (At distance R from the wire)

A charge particle (charge q ) is moving in a circle of radius R with uniform speed. v The associated magnetic moment m is given by