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

A particle of charge q and mass m moves in a circular orbit of radius r with angular speed

A particle of charge -q and mass m moves in a circular orbit about a fixed charge +Q. Show that the r^(3) alpha T^(2) law, is satisfied, where r is the radius of orbit and T is time period.

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 particle of charge 'q' and mass 'm' move in a circular orbit of radius 'r' with frequency 'v' the ratio of the magnetic moment to angular momentum is:

A particle of charge 'q' and mass 'm' move in a circular orbit of radius 'r' with frequency 'v' the ratio of the magnetic moment to angular momentum is: