Question

what will be the path of a charged particle moving along the direction of a uniform magnetic field

Answer 1

"It will go along straight path in Uniform Magnetic Field."
Explanation:
It is beacuse no deflecting force is acting on charged particle to divert its path.The motion of charged particle is same as that of magnetic field i.e angle b/w them is 0°.
F= qvBsin0° = 0
Thus no force no deflection and it will continue moving straight.