Which condition will cause a charged particle in a uniform magnetic field to move in a helix?

The charge on the particle is decreasing as it moves through the field.
The initial velocity of the charged particle is neither perpendicular nor parallel to the magnetic field.
The charged particle moves perpendicular to the direction of the magnetic field.
The velocity of the charged particle is increasing at a constant rate within the field.

1 Answer
May 16, 2017

The initial velocity of the charged particle is neither perpendicular nor parallel to the magnetic field.

Explanation:

if the charged particle is neither perpendicular nor parallel to the magnetic field then there would be a force which will give it forward direction and another force which will give it circular path .