let us discuss about the case of projection
of a charge particle parallel to magnetic
field.
here we can see.
this a region of uniform magnetic field.
and say in this region, a charge particle
plus q. is projected with a velocity vector
v. in the direction parallel to magnetic field.
we know well that magnetic force on a charge
particle is vectorially given as q multiplied
by v cross b. and as velocity vector is parallel
to magnetic field here we can see this force
will be zero. if no force will be acting on
the charge particle it’ll move.
without any deflection with a uniform speed.
or we can simply state that in the situation
path of.
particle in magnetic field.
will be a.
straight line.
so we can directly state whenever charge particle
moves parallel to the direction of magnetic
field or.
directly opposite to the direction of magnetic
field in both cases.
the magnetic force will be zero as cross product
of 2 parallel vectors is zero. and particle
move with a uniform speed undeflected in the
region.
