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When velocity vector is not normal to the magnetic field then the charged particle follows a helix path but not actually a definite circular path.Why is it.
- Prudhvi Raj Borra (age 16)
An easy way to describe a helical trajectory is to say, for example, the velocity in the z direction is uniform and the velocity in the x-y plane is rotary, i.e. the path is a circle. This is exactly the case when there is a uniform magnetic field in the z-direction and a charged particle has an initial velocity at an angle with respect to the z-axis. The z component of the velocity is unchanged whereas the x-y component goes in a circle due to the magnetic force.
(published on 03/25/09)
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