When a charged particle of charge a revolves in a circular orbit of radius r with frequency n, then orbital current will be

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' 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:

If an electron revolves around a nucleus in a circular orbit of radius R with frequency n, then the magnetic field produced at the center of the nucleus will be

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

An electron revolving in a circular orbit of radius r with a frequency v and velocity v has an orbital magnetic moment M_(0) what will be its new magnetic moment if its frequency of revolution is doubled ?

A positive charge 'Q' is fixed at a point A negatively charged particle of mass ' 'm' and charge 'q' is revolving in a circular path of radius r_(1) ,with Q' as the centre.The change in potential energy to change the radius of the circular path from r_(1) to r_(2) in joule is