As we know the force on a charged particle in a magnetic field is given by
Where q = charge of the particle ,
v = velocity of particle and B is the magnetic field in that region.
The force exerted on a charged particle in a magnetic field only exist if the velocity of the particle is perpendicular to the direction of the magnetic field as the equation suggest.
If velocity has a component along B, this component remains unchanged as the motion along the magnetic field will not be affected by the magnetic field. The motion in a plane perpendicular to B is as before a circular one, thereby producing a helical motion
Thus the described path will be helical as shown in the figure and the velocity's parallel component will make the particle move along the direction of the field.
Rate this question :