Question

Consider a moving charged particle in a region of magnetic field. Which of the following statements are correct?

1. If v is parallel to B, then path of particle is spiral.
2. If v is perpendicular to B, then path of particle is a circle.
3. If v has a component along B, then path of particle is helical.
4. If v is along B, then path of particle is a circle.

Options

• I and II

• II and III

• III and IV

• IV and I

Answer 1

II and III