Consider a magnetic field in positive x-direction. A charged particle enters this field at an angle of 30 degrees with the field. What will be the path traced by this particle?
Answer & explanation
Correct answer: option 3
Here velocity vector have two components
(i) v cos θ, parallel to magnetic field
(ii) v sin θ, perpendicular to magnetic field. Due to component v cos θ, the particle will have a linear motion but due to v sin θ, the particle will have simultaneously a circular motion. The resultant of the two is a helical path.